Quite honestly I think blind stealing is overated for SnGs. Dont get me wrong, I do blind steal, but its either b/c:

(1) I got a big chipstack and want to bully the small stacks. If its against a small stack, 3x-5x at least.... but I would make sure its consistent with my other normal strong preflop raises.
(2) Im shortstacked and need to build up. Better against BBs that have average or less chips. I would just assume bet 50%-100% of my chips
(3) 4 (maybe 5 ppl left). Id check to see if I have a marginal hand+ and blind steal. If it works, BB is closer on the bubble. If I get called and win, at least I have a chance at the money
(4) If my left opp is tight/conservative. I would blind steal. But if probably be just as safe as liimping in and betting 1 on the flop.

Blind Stealing just to pick up some chips (<5% of your stack) isnt as important in an SnG