this hand lost me the tournament

for sure

i'm not entirely sure why i minraised flop then check turn.. could i have just lead out again on turn?

this guy seemed a bit maniac so i didn't 3bet him cause i felt like he was going to 4b and i could trap him really well due to his aggressiveness nature

Winning Poker Network Game #251341326: No Limit Holdem (2,000/4,000) [2014/02/08 01:07:31 UTC]
Table: TURBO10 - $900 GTD KO 6-Max, Table 4
Tournament: 1503708
Seats: 6
Seat 3: plappaslappa (145,206)
Seat 4: tayke2 (174,794)
Button is seat 3
tayke2: antes 400
plappaslappa: antes 400
plappaslappa: posts small blind 2,000
tayke2: posts big blind 4,000
*** HOLE CARDS ***
plappaslappa: dealt [Kc Qd]
plappaslappa: raises 6,000
tayke2: raises 14,000
plappaslappa: calls 10,000
*** FLOP *** [8d 7s 3d]
tayke2: bets 15,000
plappaslappa: raises 30,000
tayke2: calls 15,000
*** TURN *** [8d 7s 3d] [3c]
tayke2: checks
plappaslappa: checks
*** RIVER *** [8d 7s 3d] [3c] [5c]
tayke2: bets 50,000
plappaslappa: folds
tayke2: pulls back uncalled bet 50,000
tayke2: mucks
*** SUMMARY ***
Pot: 96,800 | Rake: 0 |
Board: [8d 7s 3d 3c 5c]
Seat 3: plappaslappa lost -48,400
Seat 4: tayke2 won 96,800 (+48,400)

I'd float flop and if he chked turn I'd bet turn and river if I think he will fold good Ax