Filler for boat bottom

My boat has a peelply surface left from vac bagging down some thick triax glass with epoxy.I'd like to level it a bit before i paint,I have some west 404 a high density filler.Could i roll a few thin coats of this to give me some toughness against rocks?I'm not looking to sand and fair it.I have other fillers also but thought the 404 would work.
thanks.

 

Yes, it will work fine. You can thicken the resin with it so it fills the texture of the fabric. Don't make it too thick or the roller will make a steepled rough finish. It is enough to add thickener until the resin is milky looking.

 

An effective filler is Aluminium powder. West sells it as 420 filler.

http://www.wessex-resins.com/westsystem/420-aluminium-powder.html

Aluminum increases the hardness of epoxy, ultra violet resistance ,abrasion resistance and also increases water barrier effectiveness.

Barrier coat..west 422... would be another good choice. I believe it also has an aluminum powder component... plus some top secret stuff......

Both are Gray colour

 

Great stuff thanks.

 

you can mix a little bit of fine sand into the epoxy for an abrasion resistant 'filler' - a common trick in the NW where small boats get dragged up onto gravel sandbars