25nl line check flopped trips/gk oop

V is 45/19/1/~40, it's not much, but enough that we know he's a little loose pre and a little passive post.
PokerStars No-Limit Hold'em, $0.25 BB (5 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

SB ($24.50)
BB ($16.30)
UTG ($47.85)
Hero ($25)
Button ($31.65)

Preflop: Hero is MP with http://www.flopturnriver.com/phpBB2/.../smiles/js.gif, http://www.flopturnriver.com/phpBB2/.../smiles/qs.gif.
1 fold, Hero raises to $1, Button calls $1, 2 folds.

Flop: ($2.35) http://www.flopturnriver.com/phpBB2/.../smiles/jd.gif, http://www.flopturnriver.com/phpBB2/.../smiles/jc.gif, http://www.flopturnriver.com/phpBB2/.../smiles/6s.gif (2 players)
Hero bets $2, Button calls $2.

Turn: ($6.35) http://www.flopturnriver.com/phpBB2/.../smiles/7h.gif (2 players)
Hero bets $5.5, Button calls $5.50.

River: ($17.35) http://www.flopturnriver.com/phpBB2/.../smiles/th.gif (2 players)
Hero bets $16.5 (All-In), Button calls $16.50.

Final Pot: $50.35

The bet on the river is because he's behind me. I don't think I can c/f this, and if he has me beat he's almost certainly betting. He's called this far, so he has some kind of a hand and I don't know what hand can call 10 but not 16.50.

I think someone flow playing is going to raise the turn here. JhTh made sense till the river... Jh9h maybe. Seems like a better J is gona raise the turn and a lesser Jack will call down. Mid pair like 99 might call down as well.

By the river I think that is your only option to bet again.

I would play same.

I think its pretty standard and I'd fire the entire way here too.

fine as played. If hes calling the turn then hes calling most rivers anyway.

I bet slightly less on turn and either bet fold 2/3 pot on river to widen the range of worse hands that call me, or check-call river if I dont think I can fold to a raise.

The board is very dry and by the turn you have to think he has a Jack/mid pp and so by river I only think Im ahead of J8/J9 and 88/99 at a stretch but behind KJ/JT/J7/J6/66/77/TT, wierdly played AJ & if you bet all in on river 88/99 folds and you have to hope he has J8/J9 & you're paying off a much wider range of hands.
Check-calling Im sure seems weak to most players but he'll only bet about ten which saves me 7$ when I'm behind, he could vbet worse J8/J9 and gives him the opportunity to do something stupid if he's ended up at the river with anything else. (That he wouldn't call a bet with)