Trips hit multi-way -- what's Standard?

[KenProspero]

To set the scene.

.50/.05 -- Loose game generally, as one would expect.

Blinds are 25/50

Second or third hand of the Tourney all 10 players have 1500 Chips +/-. No reads on anyone.

Hero, UTG is dealt 88

Hero calls. UTG+1 raises 100 (to 150) 5 other callers (including BB, but not SB) call. Hero calls.

Pot is 925.

Flop 8TK, rainbow.

BB checks.

Hero bets 1/2 the pot.

This is my standard bet in this case. I want to get rid of the draw, but keep anyone who's hit TPGK around. With 6 in the pot, though I'm not sure whether this bet is enough to make it wrong for a straight draw to stick around, or whether I have to bet bigger.

Comments?