I like Devcon.. Avail at most hobby shops and (at least in my area) every other Home Depot or Lowes. For surf candies, I actually use a 5 minute for the first coat that I apply, followed by a thin coat of 30 minute and rotate on a wheel I made from a rather beat up grill rotisserie... (sp?)
Devcon 5-minute, don't need a turner, just a rotary vice. Actually, you shouldn't use a turner on candies because you loose the profile. The epoxy will cure round in the turner, and candies should be more compressed from the sides. But, if you use the turner, they'll still come out fine .