when is this useful because it likely to be very profitable but very hard to do it.

***** Hand History for Game 3079300890 *****
0/0 Omaha Game Table (PL) - Tue Nov 22 21:11:27 EST 2005
Table Table 65801 (Real Money) -- Seat 1 is the button
Total number of players : 10
Seat 1: gammmon ( $23.95)
Seat 2: epdaws ( $15.05)
Seat 3: woppspoker ( $23.65)
Seat 4: briachek ( $63.43)
Seat 5: PapaBurgundi ( $36.55)
Seat 6: pokar_pony ( $24.25)
Seat 7: shmegosaurus ( $27.90)
Seat 8: NautiDangler ( $24.40)
Seat 9: Litti10 ( $48)
Seat 10: mann2005 ( $18.30)
epdaws posts small blind (0.10)
woppspoker posts big blind (0.25)
pokar_pony posts big blind + dead (0.35)
** Dealing down cards **
Dealt to briachek [ Qs, Ah, Kh, Js ]
briachek calls (0.25)
PapaBurgundi folds.
pokar_pony checks.
shmegosaurus folds.
NautiDangler calls (0.25)
Litti10 folds.
mann2005 calls (0.25)
gammmon folds.
epdaws calls (0.15)
woppspoker checks.
** Dealing Flop ** : [ Th, Ac, 2c ]
epdaws checks.
woppspoker checks.
briachek checks.
pokar_pony checks.
NautiDangler checks.
mann2005 bets (1.55)
epdaws folds.
woppspoker folds.
briachek calls (1.55)
pokar_pony folds.
NautiDangler folds.
** Dealing Turn ** : [ Jh ]
briachek bets (4.50)
mann2005 calls (4.50)
** Dealing River ** : [ 9h ]
briachek bets (13.05)
mann2005 folds.
** Summary **
Main Pot: $26.10 | Rake: $0.65
Board: [ Th Ac 2c Jh 9h ]

Not necessarily the best time to do it but it has some similarities to times when maybe we should think about it.

So when do you check raise the river if ever? any tips?