$5 NLHE 6-max: 10-10 vrs aggro unknown. decision time on the river...

This is my defintion of a tough spot .

whats the best action on the river? i think i have like 2.35 left at this point.

Im not using a HUD here,have no clue who villain is. this is ZOOM.

pokerstars Zoom No-Limit Hold'em, $0.05 BB (6 handed) - PokerStars Converter Tool from http://www.flopturnriver.com
Button ($12.89)
SB ($14.16)
BB ($12.65)
UTG ($2.92)
MP ($8.84)
Hero (CO) ($4.43)
Preflop: Hero is CO with 10 , 10
2 folds, Hero bets $0.15, 1 fold, SB raises to $0.45, 1 fold, Hero calls $0.30
Flop: ($0.95) 8 , 3 , A (2 players)
SB bets $0.55, Hero calls $0.55
Turn: ($2.05) K (2 players)
SB bets $1, Hero calls $1
River: ($4.05) 4 (2 players)
SB checks, Hero ?

I fold the flop
As played fold the turn.
As played....not sure if I should do this at 5NL but I like shoving, a half decent villain should not have a check/calling range here.

I'm happy to float flops with TT as an underpair but generally not with Axx and definitly not Axxss. There are simply far too many combos of AK/AQ and many other Ax. The draw makes it even less appealing as we get double barreled more often by 2card draws now or one card draws when the flush hits.

The turn I assume your calling for flush draws? There aren't very many, the Ah is on the board, we hold the T, and we don't even know if villains 3bets wide. Once again there are still 9 combos of AK, 12 of AQ and if villain does 3bet light plenty more AJ Asxs or even weaker Ax bluffs.

IMO fold the flop, but I don't hate the float there..

I'm folding the turn relatively easy though.

As played though I would discourage the double float bluff, I put the villain on maybe KQ, and at 5nl he is probably too committed to fold.. so your fold equity isn't great here. Just check behind, also there is no busted draws out there so checking is good.