I started doing this lately...

[paco]

I've been employing the free card play alot more too. As you point out, the math works out if you have two clean overs and get the free card. This is a great bluff board for sb.

I would definitely fold to a river bet--If you're goign to call the river to a blank you should bet the turn and check river behind UI. Many times you'll go check check on the river and win with the best hand. Additionally, it discourages SB from frequently stabbing on rag boards as he should.