Question about playing the BB when you hit top pair weak kicker.

[Grisgra]

Let's say it's a low-buyin SNG (10-30) and the blinds are relatively low (10/15). Two or three limpers and you have K6o in the BB. You check.

Flop comes KT7 with a two-flush. Checked around to the button who bets 100 -- there's 75 in the pot.

You've got around 800 in chips (what you started with). How do you play it?