Connections of Seabass believe he will be a "stronger horse" when he has a second crack at the John Smith's Grand National in April.
Pat Glynn, who bought the stayer as a foal and heads the Gunners Syndicate that owns the 10-year-old, feels he is physically tougher than last season, when he was third behind Neptune Collonges in the Aintree showpiece.
Seabass, trained by Ted Walsh, has also had a lighter campaign than last term and was having just his second run of the winter when third to Roi Du Mee in the Bobbyjo Chase at Fairyhouse on Saturday.
"We're very happy with him, he's 100%. That was his last run before Aintree," said Glynn.
"He's a year older and a stronger horse this year. He had five runs before he went to Aintree last year and he's just had two this year.
"We've just got the one big target, but you do need a bit of luck at Aintree. Last year we thought he peaked a bit too soon, but he did run a good race.
"It's a pity the race wasn't in February when he was in top form, because he'd run in November, December and January as well as February."
The trainer's daughter Katie Walsh became the first female jockey to be placed in the National when riding Seabass last year.
She could again be in the plate this time, although her brother Ruby will have first choice and he has other possible mounts, including On His Own and Prince De Beauchene for trainer Willie Mullins.
Glynn added: "We don't know (about) the jockey yet. Ruby has first choice, as Ted always says. Katie rode him last year and she knows the horse. We'll be happy either way."
13 May 2013
Fabre confirms Ocovango for EpsomAspect on route to big things
Room at the top for Cityscape
Freedom steps into chasing ranks
Lucky thirteen in line for Lockinge
Galway beckons for Swinton hero
Sajjhaa set for late return
Cadeaux thriving in Singapore
Pink primed for Duke Of York
Liber takes aim at Musidora
Battle won for O'Brien
Pretending the real deal
Duntle back to winning ways
Classic glory for Flotilla
Style wins the day in Paris
Highclere double-handed for Dante
Cornerstone plans up in the air
Beckett planning Gesture workout
12 May 2013
No hurry for Jammy plansGuest in hunt for more Ascot glory
Vow set for Goodwood return
Gold-en boy Anodin in Classic hunt
Buick aiming for French strike
Angel flies home to land Chartwell
Barizan bounces back in style
Queally lights up Ascot meeting
Ektihaam storms to Buckhounds win
Nevis takes depleted Trial contest
Hard-fought battle won at Haydock
Secret impresses in Oaks Trial
Ascot drama for Fanning
11 May 2013
Felix foot-perfect on fencing debutCavalryman leads Cup charge
Ramsa ready to stand Trial
Duntle out to dazzle in Amethyst
Swift return doesn't bother Moran
Garman gives Bolger hope
Henderson: Ground vital for Voice
McMahon sweet on Tart Ascot claims
Murphy to move to France
Athos flies to Ormonde glory
Dee day for impressive Magician
Kingdom confirmed for Queen Anne
Secret's out for Lingfield glory
Lambe expects good run from Hall
Marengo ready to do battle
Greatwood on trial at Lingfield
Barizan sneaks into Swinton
Jamesie gunning for Vic-tory
10 May 2013
Telescope focus is on DanteBlinkers considered for Guarantee#
Bonfire camp bemoan Huxley flop
Moohaajim has six appeal
Ascot welcomes a couple of Guests