88 debatable hand

[rafct]

This is a hand I played today while clearing the expekt bonus. The limit is 0,5/1 with a mix of tight passives and tight agressives on the tables. How would you play it? Any advice welcome, I plan to post my thoughts after some discussion.

Hero is SB with 8[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/diamond.gif[/img]

5 callers, Hero completes, BB checks

Flop (7SB, 7 players) 3[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/spade.gif[/img]
Hero checks, check, check, MP bets, call, call, Hero calls, 2 folds

Turn (5,5 BB, 4 players) 6[img]/images/graemlins/club.gif[/img]
Hero bets, MP calls, call, call

River (9,5 BB, 4 players) K[img]/images/graemlins/heart.gif[/img]
Hero bets!?