I used Epifanes Epoxy Primer under Awlgrip (roll & tip over). My
original intent was to use Epifanes P.U. (two part) topside paint. In
fact I did apply one coat, but was unhappy with the remaining brush
marks. I sanded off the Epifanes, re-applied the primer, then applied
the Awlgrip over this.

Came out swell!

I imaginne you could also use Interlux 404/414, i.e. any two component
epoxy primer.

Note than none of these are inexpensive though - you'll pay about
$80/gal for Epifanes, $60/gallon for Interlux, around $100/gallon for
Awlgrip 545 (plus required thinners/reducers).

Don't know what size craft you're painting, but it may be wise to do
an all Awlgrip job. Be SURE to download their manual, and follow
instructions to the letter.

Mike Worrall
Los Angeles