[Micturition Man]

You definitely have to peel 4th here, your worst case is about 60/40 versus A234.

Also in theory you probably shouldn't be completing 3rd 100% because a 4 with random downcards is a quite small favorite over an 8 with random downcards.

If the 8 knew you were raising 100% he could probably profitably reraise 100%, showing an automatic profit if you are folding the bottom half of your hands.

That's not to say it doesn't work in practice though.

I think in theory you should probably complete 3rd with any A-8 in the hole, plus some high hands, but fold hands with two K-9 cards. Something like that.