15 pt match tied 2-2. We had a bit of a blot hitting contest going until he danced last roll with 2 on the bar.

1. Would you have doubled?
2. Black to play 4-3...what and why?

1) With two men on the bar i would double. If you had 2 or 3 more builders I think your position would be to good to double.

2) I am tempted to say 13/9 8/5....but i think we are shy a builder or 2 for that play. That being said i feel like we need to get our back checkers moving and into play. The checkers on whites 5 point will be last to move....my move now becomes 22/18 ( back checkers moving) and 13/10 bring straggler down to help secure 4 point.

yes i double, but might wait one roll if I know the opponent will take very loose

I play 8-4, 13-10

With 2 anchors we can afford to play very aggressively to build a 4 prime in our own board. If we get hit it is not the end of the world since white is at least 2 rolls away from being able to stregthen his board much.

I'm answering without looking at the other opinions:

In a match I would not double here because there is no way White would take. Just play on and try to win a gammon. If it was a money game I would double because of the Jacoby rule.

With the 43 you go all-out with 13/9 8/5 to have as much ammunition as possible for keeping him on the bar and making your 4-point.

this postion is at least a double with two white men on trhe bar and his awful structure. black is in complete control here. and even if black rolls bad and white rolls 22, black is fine next turn, so I guess black can try for a gammon without risk right now. thats why I would not double now, but try to close the homeboard.
but there is no match consioderation in this. this is exactly a cash situation with a 15pt match tied at 2. match consideration starts late in the match and with soneone leding the score.

I guess 13/9 8/5 is way the best move here, because it brings 4 builders for the 4point. and the 4point is by far the most important point right now. black doesnt worry at all about defense here. I dont even think holding whites 5point is important in the near future, unless white anchors quickly.

With 5 of Blacks checkers in whites home board he cant close out anything for several rolls. He needs to mobilize his back checkers. By NOT moving 8/5 you also guard against the miracle 4/4. I would agree with your choice if we had even one more builder in play...as is 13/10 22/18 seems to accomplish all we need to do. I also feel that your anchor on whites 5 point is still very valuable, those checkers should be the last to move.

having 3 or 4 builders for the 4point is a big difference here, because both sides really want to make it. thats why i really like 8/5. even if white rolls 44, black is not in trouble, because he has great control of whites side of the board and whites structure is just awful.
black has plenty of moves to get his back checkers moving. and although black doenst have lots of builders, he still can close 5 points of his homeboard without the back checkers, so I think 8/5 is better here than 22/18.
8/5 attacks all anchor-points for white, while 22/18 doesnt to anything right now