Was putting on a fill coat yesterday, and as usual having a fun time herding the epoxy around with a squeegie. As I got towards the end of a batch it had just started to kick, and the process and results got much better. Like going from Aunt Jemima to honey. Another few minutes and I was on the wrong side of the kick. This got me thinking (usually trouble) about prepromoting the epoxy for fill coats, but I can't find much info. So...

Anyone have good/bad experiences to report? Any favorite ratios, wait times, etc? Is a prepeg'd mix smooth or 'gloopy?' What does prepromotion do to the pot life of the finished mix? I'm using System 3 medium for the detail-oriented.

Thanks.