me no like
I found the Loon hard head to be extremely cloudy, so I tried the Loon soft head, and it was only a little better. Better, but certainly not clear - I had the same results you report. I now use the softhead to coat knots and such (easier to use than aquaseal because of the bottle and brush built in). Since I rarely fishing salt anymore, I rarely use epoxy on flies, and so haven't settled on an alternative.
good luck, some chemist out there will hopefully be reading this