Sanding a deck for flow coat?

[two stroke mick]

I am planning to flow coat the deck later this year when the weather warms up. The purposes of this work is to tidy up the deck which will have had a new jockey console attached to it (glassed in) and a glassed in Deck matrix to allow for removal jockey pods. The deck is embossed with small squares circa 1mm each (see attached photo).
1) Do I need to sand the deck smooth to get a good finish with no slip flow coat?
2) I have found that the use of an orbital sander gives a very good finish but is very very slow. The grinder is very fast but the deck needs sanding after it to level it up a bit.
You advice on this stage of my project please..
TSM

[Wightdiver]

I used a 4 inch grinder with a flap disk and got a good enough finish for flow coat.

[Waterman]

Intend on doing this job myself come spring. My understanding would be if your using non slip flowcoat you won't need to prep the surface of the deck to be as smooth/even as you would if you wanted a smooth finish??? Have you sourced flowcoat locally? I'll be looking for some (pigmented) stuff myself....

[nugent]

Smooth

http://www.ecfibreglasssupplies.co.u...-catalyst.aspx


Non slip
http://www.ecfibreglasssupplies.co.u...attopcoat.aspx

[two stroke mick]

The flow coat I was planning to use is as per the link
http://www.grs.ie/wp-content/uploads...-Pricelist.pdf

See page 3

TSM

[Boatnomad]

Originally Posted by two stroke mick

The flow coat I was planning to use is as per the link
http://www.grs.ie/wp-content/uploads...-Pricelist.pdf

See page 3

TSM

Good supplier,bought some FlowCoat from them few years ago,guy there really knows his stuff.
No prep on old GRP just 100% clean-down worked fine for me.

[Waterman]

That's the crowd I was looking at too. Just need to find the correct colour code for pigment.