"Paul Oman" wrote in message
m...


DON'T EVERY USE SAND ON A BOAT! never... it something you or the
next owner cannot remove with 'sand' paper.
common is ground walnut shell (hard but sandable - comes in lots of
sizes) or off white ground rubber (not the black ground up car tire
crap).

Google "white ground rubber grit' for sources of the rubber grit
and walnut shell

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I opted to not use sand because I wanted a bigger grain. Didn't think about
taking it off, just got lucky.
Got a 25 lb box of course ground walnut shells at Harbor Freight for about a
dollar per pound. Should be plenty to do my boat and a few neighbors'!
Had a piece of fiberglass scrap (cut off of something) and did a little test
with some left over Valspar 1 part PU paint and it worked well with 2 thin
coats, plenty of grit and won't be torture on bare feet.