Gelcoat is not sprayed with conventional paint spraying equipment. If you plan on using a Wagner you better get it right the first time...Plan on either throwing it away after the first batch kicks off in the gun...or working very fast and getting it all cleaned out before it kicks...easier said then done...

One other thing, except for the top of the line model (and I doubt if that one would either) they won't be able to handle a liquid as thick as gelcoat. As you are cussing the Wagner trying to get it to shoot the too viscous liquid, the precious working time will be tick...tick...ticking away (play the jeopardy song here). Don Pardo tell him what he has won... I am sorry, you lost the daily double in the spray gelcoat catagory...but you get to keep the locked up Wagner for your parting gift.LOL...Please don't try this at home...

Wax mixed in gelcoat is nothing mystical...it is done every day, when ever gelcoat is used on an exposed surface (that is, exposed to the air, not under a laminate in a female mold).

Spray paint...if you go that route check out what Sherwin Williams has to offer. A much better paint and the fan spray tip is the next best thing to a pro touch up gun. I did an Johnson outboard with their paint and it looks as good as factory. Probably the best tip on a can of spray paint you will find anywhere...pick up one of those snap on trigger handles while you are at it and it will make it even beter. Krylon spray paint has cheap, round pattern spray tips that helps to produce those dreaded runs...

Regards,
Bob