rghy2's advice is pretty sound BR management. But let's assume you didn't have PO freerolls to help build your BR to a comfortable level:
Find the smallest buy-in game period and pray you win. I don't play Bovada but I would guess they must have $1 double-or-nothing SNGs. Ideally, you'd like to have at least $10 to back it up, but with just $2 of a BR and $1 minimum buy ins - double or nothing is your best bet.