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Old 08 July 2015, 04:36   #21
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I'd clear the rocks in the water/launch area (not the ones on your house boundary), stick with a hard floor SIB and use any lightweight ramp material - maybe some PVC 6" half-pipe sections that slide into each other for storage then overlap each end with a pin dropped through a hole in each to secure or similar, easy to assemble, store, use. Or some off-road waffle boards (like lightweight sand ladders), etc, etc.

Or rearrange two rows of the rocks to match the transom/dolly wheels track and minimise the gaps and infill with aggregate/concrete to smooth the path enough, does't need to be perfectly smooth - larger pneumatic wheels will roll over the smaller bumps.
I agree with you, It should be doable. The rocks are hard to move around though. The big boulders out in the water were recently installed as part of extra shoreline protection. (Heavy machinery - I asked for a 3meter gap as seen in the photo below)

I think it would be an idea to try to re-arrange some of the smaller boundary rocks as suggested.


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I always think there's mileage in revisiting previous successful engineering projects for ideas...



But obviously you will have more buoyancy!
I can't view the video due to some country restrictions :S

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A photo taken from the beach level across the boulders up to the house would help understand the obstacle more.
Here are some more images





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Old 08 July 2015, 04:40   #22
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Man, that's a piece of cake!

And I think we are all even more jealous now.
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Old 08 July 2015, 04:51   #23
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What about 2 or 3 8 x 4 plywood sheets hinged at the 4 ft end simply laid out over the rocks to form a temporary ramp/flat surface to run a boat up and down on the transom wheels. Easily portable & cheap, fit a winch somewhere at the top to make recovery easier?
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Old 08 July 2015, 04:55   #24
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Man, that's a piece of cake!

And I think we are all even more jealous now.
I actually suffered a hernia from trying to move a few of these rocks earlier!

But yes with the right manpower it might be possible to create something temporary but sturdy.

If going for this 'bigger' setup, wouldn't it make more sense to go for something like a C4+30/40HP engine instead of light boat with 20HP? That would be like 200kg total, compared to 100kg?
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Old 08 July 2015, 04:56   #25
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>>>Man, that's a piece of cake

Agree now we've seen the pics from beach level a carry would be no problem with no need for DIY ramps etc. I'd still say an air floor will be much easier as a third person would be welcome to carry the extra 25kg of a hard floor but either will be doable.
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Old 08 July 2015, 04:59   #26
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What about 2 or 3 8 x 4 plywood sheets hinged at the 4 ft end simply laid out over the rocks to form a temporary ramp/flat surface to run a boat up and down on the transom wheels. Easily portable & cheap, fit a winch somewhere at the top to make recovery easier?
Thank you for the input, it could be a way to do it Wouldn't I need something for the bow while winching it down?
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Old 08 July 2015, 05:00   #27
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>>>Man, that's a piece of cake

Agree now we've seen the pics from beach level a carry would be no problem with no need for DIY ramps etc. I'd still say an air floor will be much easier as a third person would be welcome to carry the extra 25kg of a hard floor but either will be doable.
Ok cool, that you think it's doable as I initially considered it.
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Old 08 July 2015, 06:07   #28
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Soon knock something up for the bow !Click image for larger version

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Old 09 July 2015, 07:44   #29
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It's proving a bit hard to find a light flat floored SIB rated for 20HP - Right now my only option is a Mercury Air Deck 320: http://www.mercury-inflatable.com/qu...0Fishing%20340 - 49KG.
I'm thinking of getting this to test it out and long term buy something heavier/better if I create a ramp. What do you think? - I think it's very important I choose something where the family will feel comfortable, so such a flat floored boat will work good I think. The boats rated for 20HP are very few and there's not much to choose from.

I have talked to the F-Rib dealer regarding the 375 flat floored version, and they're currently not selling it as there had been issues with water getting inside the hollow parts of the floor sandwich. They're waiting for a fix from the company making the boats.
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Old 09 July 2015, 08:21   #30
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how about 2 of these in line (fixed together) with 3 trailer rollers bolted on each ramp, one person either side to guide and one to let out a painter at the top to control the speed?

Folding Loading Ramps TRP623 Pair (2200mm long, 230mm wide) - The Ramp People
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