I am no expert, with my limited experience as a donk noob, I tend to limp in with speculative hands early in SNG tourneys where I know the blinds are almost nothing, level 1 or level 2 blinds, 15/30 or 20/40 when my stack is still 1000 or better. I do realize that it may be spewing chips, but if I'm in middle to late position with no raisers in front, it is a chance to hit the flop hard... probably a leak for me though.