I'm having a problem with fisheye's in the epoxy, anoying since I'm trying to get that last coat done.

I expect it's a contaminant problem, what's the right way to clean the surface between epoxy coats.   I have to sand between coats since I can only work on the boat once a week or less.

Any suggestions on what to do with current eye's ?  i'm in a never ending cycle, sand and apply, only to start over again.