After 3 people called with obvious trips and no draws on the board, I feared someone had flopped a boat. My plan was to slow the hand down as much as possible, because this could help me both offensively and defensively. Anyone fold to the bet on the river?

Thanks for the feedback.

***** Hand History for Game 2181789163 *****
$25 PL Hold'em - Thursday, June 09, 19:36:33 EDT 2005
Table Table 36826 (Real Money)
Seat 5 is the button
Total number of players : 10
Seat 1: ottimo ( $102.67 )
Seat 2: youngun21 ( $30.2 )
Seat 4: david3952 ( $26.8 )
Seat 6: heinzcatchup ( $12.55 )
Seat 7: HumptyHumps ( $20.85 )
Seat 9: geirin ( $106.4 )
Seat 10: NickSoBad ( $25 )
Seat 5: Zangief00 ( $30.1 )
Seat 3: nybeast ( $23.9 )
Seat 8: emeraldhand ( $19.5 )
HumptyHumps posts small blind [$0.1].
emeraldhand posts big blind [$0.25].
** Dealing down cards **
Dealt to Zangief00 [ Ac Qc ]
david3952: nice pot
>You have options at Table 37535 Table!.
geirin folds.
Zangief00: Thx.
NickSoBad folds.
ottimo calls [$0.25].
youngun21 raises [$0.75].
nybeast folds.
david3952 folds.
david3952: You are very welcome
Zangief00 calls [$0.75].
HumptyHumps calls [$0.65].
emeraldhand calls [$0.5].
youngun21: what a nice table
ottimo calls [$0.5].
** Dealing Flop ** [ Qd, 6h, Qs ]
HumptyHumps checks.
emeraldhand checks.
david3952: Well we try
Zangief00: :>
ottimo bets [$1.56].
youngun21 calls [$1.56].
Zangief00 calls [$1.56].
HumptyHumps folds.
emeraldhand folds.
** Dealing Turn ** [ 5d ]
david3952: I see that you are back up there youngun
ottimo checks.
youngun21 bets [$5].
Zangief00 calls [$5].
ottimo folds.
** Dealing River ** [ 7d ]
youngun21 bets [$17.53].
Zangief00 calls [$17.53].
>You have options at Table 37535 Table!.
youngun21 shows [ 6d, 6c ] a full house, Sixes full of queens.
Zangief00 doesn't show [ Ac, Qc ] three of a kind, queens.
youngun21 wins $50.84 from the main pot with a full house, Sixes full of queens.
>You have options at Table 37313 Table!.