Interesting Hand

Just played this guy heads up for a while. At the start of the hand, he's up around 400-500 on me I think. He calls 3 bets too light and likes to float a lot to take pots away on later streets. I finally busted him on this hand.

PokerStars Game #28088914984: Hold'em No Limit ($5/$10) - 2009/05/11 19:36:38 ET
Table 'Leda IV' 2-max Seat #1 is the button
Seat 1: nitehawk2123 ($1723.50 in chips)
Seat 2: OMGSHIPIT ($1421 in chips)
nitehawk2123: posts small blind $5
OMGSHIPIT: posts big blind $10
*** HOLE CARDS ***
Dealt to OMGSHIPIT [Ac 6c]
nitehawk2123: raises $20 to $30
OMGSHIPIT: raises $70 to $100
nitehawk2123: calls $70
*** FLOP *** [4h 2c 7d]
OMGSHIPIT: bets $140
nitehawk2123: calls $140
*** TURN *** [4h 2c 7d] [6h]
OMGSHIPIT: bets $300
nitehawk2123: calls $300
*** RIVER *** [4h 2c 7d 6h] [7h]
OMGSHIPIT: checks
nitehawk2123: bets $1183.50 and is all-in
OMGSHIPIT: calls $881 and is all-in
Uncalled bet ($302.50) returned to nitehawk2123
*** SHOW DOWN ***
nitehawk2123: shows [Ts As] (a pair of Sevens)
OMGSHIPIT: shows [Ac 6c] (two pair, Sevens and Sixes)
OMGSHIPIT collected $2841.50 from pot
*** SUMMARY ***
Total pot $2842 | Rake $0.50
Board [4h 2c 7d 6h 7h]
Seat 1: nitehawk2123 (button) (small blind) showed [Ts As] and lost with a pair of Sevens
Seat 2: OMGSHIPIT (big blind) showed [Ac 6c] and won ($2841.50) with two pair, Sevens and Sixes

on the river he's basically turning his hand into a bluff. 88-1010 is never shoving the river, well if they are, more power to them. I actually put him on 56, which wouldn't shove the river either because he has showdown value and can win vs. two big cards that i might have been barreling on. I timed down almost to zero and called and fortunately was right. May continues to be good to us!