Im not even sure where to start with an analysis of this hand except to say flat out that moneycrazy is obviously a total razz donk given his play here. I wasnt sure what exactly my line should have been, how would you have played it:

PokerStars Game #5984073307: Razz Limit ($2/$4) - 2006/08/20 - 04:43:12 (ET)
Table 'Carina II' 8-max
Seat 1: Tipito ($88.25 in chips)
Seat 2: Niclas666 ($182 in chips)
Seat 3: qmcg ($57.75 in chips)
Seat 4: R1PP3R ($99.25 in chips)
Seat 5: portice4747 ($110 in chips)
Seat 6: skibum1108 ($33.25 in chips)
Seat 7: moneycrazy ($72.25 in chips)
Seat 8: scottyno ($35 in chips)
Tipito: posts the ante $0.25
Niclas666: posts the ante $0.25
qmcg: posts the ante $0.25
R1PP3R: posts the ante $0.25
portice4747: posts the ante $0.25
skibum1108: posts the ante $0.25
moneycrazy: posts the ante $0.25
scottyno: posts the ante $0.25
*** 3rd STREET ***
Dealt to Tipito [8d]
Dealt to Niclas666 [2d]
Dealt to qmcg [3s]
Dealt to R1PP3R [Jc]
Dealt to portice4747 [As]
Dealt to skibum1108 [Td]
Dealt to moneycrazy [Ac]
Dealt to scottyno [Ah 5h 7c]
moneycrazy said, "season pass holder"
R1PP3R: brings-in low $1
portice4747: calls $1
skibum1108: folds
moneycrazy: raises $1 to $2
scottyno: calls $2
Tipito: folds
Niclas666: folds
qmcg: folds
R1PP3R said, "me too, gotta start working out more to be ready"
R1PP3R: folds
portice4747: calls $1
*** 4th STREET ***
Dealt to portice4747 [As] [7s]
Dealt to moneycrazy [Ac] [Jd]
Dealt to scottyno [Ah 5h 7c] [9s]
portice4747: checks
moneycrazy: bets $2
scottyno: calls $2
portice4747: raises $2 to $4
moneycrazy: calls $2
scottyno: calls $2
*** 5th STREET ***
Dealt to portice4747 [As 7s] [6s]
Dealt to moneycrazy [Ac Jd] [9d]
Dealt to scottyno [Ah 5h 7c 9s] [4d]
portice4747: checks
moneycrazy: checks
scottyno: checks
*** 6th STREET ***
Dealt to portice4747 [As 7s 6s] [Qh]
Dealt to moneycrazy [Ac Jd 9d] [Th]
Dealt to scottyno [Ah 5h 7c 9s 4d] [Qc]
R1PP3R said, "i usually have a pass at Sundance, small resort, no crowds"
moneycrazy: bets $4
scottyno: calls $4
portice4747: calls $4
*** RIVER ***
Dealt to scottyno [Ah 5h 7c 9s 4d Qc] [6h]
moneycrazy: checks
scottyno: bets $4
portice4747: calls $4
moneycrazy: folds
*** SHOW DOWN ***
scottyno: shows [Ah 5h 7c 9s 4d Qc 6h] (Lo: 7,6,5,4,A)
portice4747: mucks hand
scottyno collected $39 from pot
*** SUMMARY ***
Total pot $41 | Rake $2
Seat 1: Tipito folded on the 3rd Street (didn't bet)
Seat 2: Niclas666 folded on the 3rd Street (didn't bet)
Seat 3: qmcg folded on the 3rd Street (didn't bet)
Seat 4: R1PP3R folded on the 3rd Street
Seat 5: portice4747 mucked [6c 8c As 7s 6s Qh 9c]
Seat 6: skibum1108 folded on the 3rd Street (didn't bet)
Seat 7: moneycrazy folded on the River
Seat 8: scottyno showed [Ah 5h 7c 9s 4d Qc 6h] and won ($39) with Lo: 7,6,5,4,A

I think you should bet 5th. Portice's check indicates that he probably paired his 6. Plus, the fact that he limped on 3rd suggests that he probably does not have such a strong hand (i.e. he is more likely to be drawing to an 8 than to a 7).

The hand plays out differently after that. As played, I think an argument could be made for raising 6th as well, for the same reasons.

I raise 6th.

I bet 5th street and raise 6th.

I agree with dingas that check on 5th straight almost guarantees that he paired his down 6...you need to attack here and try to push him off the hand.

This is correct.