That sounds pretty odd... Is he using fibreglass or literally just brushing resin on it? He's using epoxy right?
Can you feel the cracks or are they just showing through what he's done? Shouldn't be anything special needed for the repair.
I'd sand back the damaged areas until the damaged parts are gone and then wrap a new piece of 4oz cloth about 2" bigger than the damaged area, laminate it with epoxy and tidy it up with sandpaper once it's properly hardened. Then finish coat it with more epoxy (with a little additive F added if you have access to it) and then sand up to 400 or higher to finish it in with the rest of the board.
I think he was just using some type of fiber filled suncure resin and just sanding it down then going over it again. This time it was fairly thick and still cracked. I would just follow a ding guide and do it myself but I have no access to this stuff atm
Ah right. That stuff is ok for a temp quick fix but it's never going to be a perfect job.
the repair should be pretty easy for someone who knows what they are doing and is comfortable lapping rails and board noses.
why don't you hit me with an email at the address below and I can help you a little bit further...