Bluffing the all-in guy

I thought I'd played this hand perfectly until I was outplayed by a spectacular bluff. I just don't think people realise that when someone is all-in, they can't be bluffed, lol.

Game #2445162254: Hold'em NL (15/30) - 2006/05/21 - 13:00:51 (GMT)
Table "STT1 2653768 - 1" Seat 4 is the button.
Seat 1: Paulieeee (1465 in chips)
Seat 2: Wardskii (385 in chips)
Seat 3: RumTiddle (933 in chips)
Seat 4: Zaphod77 (1570 in chips)
Seat 5: Eatlard (985 in chips)
Seat 6: Grantg (1300 in chips)
Seat 7: Kingko002 (1254 in chips)
Seat 8: Punchs (940 in chips)
Seat 9: macawboy (895 in chips)
Seat 10: SCARLET (273 in chips)
Eatlard: posts small blind 15
Grantg: posts big blind 30
----- HOLE CARDS -----
dealt to RumTiddle [Ks 8c]
Kingko002: folds
Punchs: calls 30
macawboy: calls 30
SCARLET: calls 30
Paulieeee: folds
Wardskii: calls 30
RumTiddle: calls 30
Zaphod77: calls 30
Eatlard: calls 15
Grantg: checks
----- FLOP ----- [4s 8d 7s]
Eatlard: checks
Grantg: checks
Punchs: checks
macawboy: checks
SCARLET: bets 150
Wardskii: folds
RumTiddle: raises to 300
Zaphod77: folds
Eatlard: folds
Grantg: folds
Punchs: calls 300
macawboy: folds
SCARLET: is all-in 93
----- TURN ----- [4s 8d 7s][Ac]
Punchs: bets 610 and is all-in
RumTiddle: folds
Returned uncalled bets 610 to Punchs
----- RIVER ----- [4s 8d 7s Ac][Tc]
----- SHOW DOWN -----
Punchs: shows [3s Js] (High Card Ace)
SCARLET: shows [8s 5s] (A Pair of Eights, Ace high)
Punchs collects 114 from Side pot #1
SCARLET collects 969 from Main pot
----- SUMMARY -----
Total pot 1083 Main pot 969 Side pot #1 114 | Rake 0
Board [4s 8d 7s Ac Tc]
Seat 1: Paulieeee folded before Flop (didn't bet)
Seat 2: Wardskii folded on the Flop
Seat 3: RumTiddle folded on the Turn
Seat 4: Zaphod77 (button) folded on the Flop
Seat 5: Eatlard (small blind) folded on the Flop
Seat 6: Grantg (big blind) folded on the Flop
Seat 7: Kingko002 folded before Flop (didn't bet)
Seat 8: Punchs showed [3s Js] and won (114) with High Card Ace
Seat 9: macawboy folded on the Flop
Seat 10: SCARLET showed [8s 5s] and won (969) with A Pair of Eights, Ace high