: I have four coats(2 rolled on) on my hull and it is not completely smooth.
: Should I sand again and add another coat now or should the skim coats
: after putting the two halfs together be enough to even it out?(with
: sanding prior to varnish etc.)

I'd suggest waiting until you join the deck and glass and feather your exterior seams.

Then rough sand the whole boat. Any place you see glass weave stop! sanding and move on.

Then coat the whole boat with two more coats of resin. Then you can start sanding this with
120 grit because the surface will be very smooth. You'll save time, and you'll be certain you will not
sand into the glass.

All the best,
Rob Macks
Laughing Loon CC&K
www.laughingloon.com