You could try 'Gun Wash'. It's a solvent sold by fibreglass suppliers to clean gel coat guns. amazing, though dangerous stuff. It's a lower volatility alternative to acetone, and I've used it (wearing an organic cartridge mask of course) to clean everything...tape, uncatylized resin, epoxies... great stuff, and only about $15/gal

Jeff H

: Ok I know Ive posted once before on the subject but... instead of trying to
: get this stuff to cure ( I screwed up the mix big time, the week and a
: half drying time kinda hints at that no?) Ive managed to scrape the vast
: majority off the bottom of the 'yak (the only area with bad mix) so now
: there is a very tacky residue left with areas of say a millimeter or so of
: polymer exopy left, what would wipe/dissolve it off? Prefferably without
: sabatoge to the underlying material so I may introduce a new layer of poly
: onto it so as to finally have this kayak's bottom nice and smooth. other
: than that, this rebuild is coming along nicely indeed, cant wait to build
: strip kit! Thanks, and I love reading this forum, its really great.