The product is supplied by http://www.coppercoat.com/
The prep depends on the hull and if its has had a paint/antifouling applied in the past.
You need to get to clean gelcoat then sand down with 80-120 grage paper.
I then applied either 3 or 4 coats of epoxy to help with osmosis, then followed by 4 coats of copper coat.
Keep it clear of alloy or other fittings leaving about a 3" gap round them.
This all needs to be applied with no more then about 12 hours beteen coats. In real terms its two solid hard days work with a average of 3-4 hours between coats, dependant on temprature, the hotter the better not must not go below about 5 Deg C, I think.
Once its all done leave it to fully cure for about 7 days then sand back to expose the copper.
This sounds hard work, which it is, but unlike other antifouling once done that it apart from light sand downs every few years.
They indicate a life of 10 years plus.
The reason why you have to keep redooing normal antifoulings is they contain biocides, which kill the marine life which comes in contact with it. However this leaches out fof thew antifouling so anfter a year or two its all gone and needs replacing.
Now i have used it I rate it but it is expensive, think it cost me bet part of 300 quid.
I have heard reports of it not working but it has worked well for me.
The tubes, well thats hard, not found anything that works 100% so just leave mine as their is not that much in the water at any speed.
I belive not antifouling for a RIB spending most of its time in the water is not a option as growth form withing weeks, depening on the area. Dont belive it will harm the hull but will make a big differnce to speed and fuel consmption.
I left my 4.8 in a marina for 4 weeks and it dropped 8 kts of my speed.
Some of the growth can be power washed of easy but barnicals and some form of worm casts are very hard to remove even with a good powerwash.
Not keen of powerwashing the tubes, as I think you may be able to lift seams, at least I dont want to find out if you can or not.
Hope this helps