$100 - 99 against a crazy: Is passive OK here?

[Manchild84]

This hand feels disgusting, but I'm not sure where I play differently. Villain is a 49/33/9 LAGgro maniac, who has been dropping 7xBB PFraises on the regular.
My main justification for playing like this is that I've got showdown value, but can't stand a check-raise, so playing a small pot feels fine. But I still feel way too passive here.
Thoughts? (Other consideration is I want the chance to be deep with this guy)

Ultimate Bet - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 5 Players - (LegoPoker HH Converter)

SB: $156.45
BB: $57.10
Hero (UTG): $100.00
CO: $80.00
BTN: $165.70

Preflop: Hero is dealt (5 Players)
<font color="red">Hero raises to $4.00</font>, 2 folds, <font color="red">SB raises to $13.00</font>, BB folds, Hero calls $9.00

Flop: ($27) (2 Players)
<font color="red">SB bets $5.50</font>, Hero calls $5.50

Turn: ($38) (2 Players)
SB checks, Hero checks

River: ($38) (2 Players)
SB checks, Hero checks

Pot Size: $38.00 ($1.90 Rake)

[dchz]

i'd bet river for value and fold to a raise, but this line is ok i guess

[Suigin406]

get a river bet in, i see no reason not to...even maniacs prolly aren't stupid enough to c/r this with air...

[CennyCripple]

I also want to bet river, maybe halfpot hoping to get an ace to call

[Manchild84]

And hope for value from an A kicker? What would my betsize be?

[Sphere99991]

Bet the river and get called by A hi or K hi.

[Manchild84]

Yeah, I guess the flipside to the high aggro is that he's probably firing any time he has a piece of board.

[Suigin406]

1/2 pot, it's tempting for him to call with A high and since i can't ever see him c/r this, he might put u on busted str8 draw and call...