No Choice Band love?
Samurai of Choice (Band)
Samurott w/ Choice Band + Torrent
Adamant Nature; 252 Attack, 252 HP, 6 Defense
So, this set aims to hit very hard on the physical side. Aqua Jet disregards your low speed, and hits quite hard indeed with the Band and STAB. Revenge would normally seem like an odd choice, but by not investing in Samurott's already rather bad speed, you can almost guarantee the boost, providing a powerful physical move. Night Slash combines with Revenge for near-perfect coverage (resisted by only Heracross and Toxicroak, iirc). The last move depends on your needs. If you want a more powerful water move than Aqua Jet, you can always go for Shell Blade. However, Megahorn and Return both get great coverage with Aqua Jet. Megahorn hits harder and destroys grass-type switch-ins. However, Return has more reliable accuracy, but doesn't hit as hard, and doesn't hit anything super-effectively. Torrent is the ability of Choice- after frequent switching in and out, you're bound to take a few hits, and likely soak up a lot of entry hazard damage. With Torrent, you can turn this to your advantage, putting your opponent in a bad situation when you pull out a barrage of Torrent-boosted, STAB, Banded Aqua Jets late game when their water resistors are either taken out or too low on health to do their job.
"Open your mouth too wide, and your ears close."