If you are using MEK you aren't using epoxy, but that's OK. If it stinks to high heaven it is polyester. You may be able to mix up a "hot" batch of resin with too much MEK and paint it on over the slow stuff and help get it to kick. The downside of this is if the stuff under the new coat does not kick it is harder to clean, but I expect you can force it. Also get the boat warm to speed up the reaction. But don't use open flame to warm it polyester contains a lot of solvents which are highly flammable.

: ok six hours later the epoxy (hand lay up with MEK activator)ain't active.
: its like cake icing thats left out to dry... Im doing a rebuild on this
: kayak that got crushed by a tractor. (lol) yeah. so all is well till i go
: for the third layer of epoxy with the phene. glassballs mixed ikn to
: lighten things up and ease the sanding. Ive got some degree of hardening
: but not all the way around? Should I scrape it off or will it harden in a
: day or two. I guess imn a few drops shy on the MEK...ahhh well...it is a
: free kayak though..