I've never dunked my cakes anymore. I make about 4 spore prints from each harvest and just start over. You start getting less shrooms each time you dunk (at least I do). After my first few mushies come grow out, I spore print them, and then continue to reonoculate the jars. By the time my first cakes are done, my others are just about ready to start the fruiting anyway. Plus, I dont need to buy more jars..
Damion: Get your stuff from Spores101.com Go with the B+ or A strain. Gulf coast is awsome, but it takes some more time then A strain. Also, Pink Buffalo, if grown right is turning out to be quite a good little mushroom..