Playing against a maniac

[KenProspero]

How do you play in a one play tournament against a maniac.

1 table, small stakes, Bugsy's.

1500T chips to start. I'm down to about 800 chips, 5 players remaining. Dealt QTo (big blind)

All fold except for the chip leader (small blind), who calls.

Flop comes down T [img]/images/graemlins/club.gif[/img]J [img]/images/graemlins/diamond.gif[/img]Q [img]/images/graemlins/club.gif[/img]

Chip leader (about 8500T) goes all-in.

Throughout the tournament, this guy's been a maniac on a roll. Has probably been all-in 7 or 8 times (mostly to drive out other players because of the size of his stack). Hands have ranged from 9-6o to KK (most with cards that I'd have folded.

I have two pair, but there's a possibllity for a straight (or straight draw) or a flush draw. Given that sb has gone all-in on anything, I have no read.

I ended up calling -- basically, with my chip position, I HAD to double up or I'd be gone, but wasn't sure what to do.

Any comments?