HU vs. MoleDaddy

[eBo]

I don't have hand history because I'm at work. This was in the HU Match Play. MoleDaddy is a good HU player, who's won over 100k. The hand went like this:

We're both deepstacked (~75BB), and blinds are 10/20, so they're both irrelevant to this hand.

Me: A [img]/images/graemlins/heart.gif[/img]8 [img]/images/graemlins/heart.gif[/img] in the BB

Button completes. I raise 4xBB. Button calls.

Flop: J [img]/images/graemlins/spade.gif[/img]J [img]/images/graemlins/club.gif[/img]8 [img]/images/graemlins/spade.gif[/img]

I bet, button calls.

Turn: 2 [img]/images/graemlins/spade.gif[/img].

Check, check.

River: K [img]/images/graemlins/diamond.gif[/img]

What's my river line? I don't like betting, because I don't think he's calling with anything worse, and he's fully capable of bluff raising. I don't like check/folding because he's bluffing often enough. So I check/called, but I don't think it was the right play.

Also, I should've bet turn, right? But it's so exploitable to raise me on the turn.