raise and call off?
if villain calls bet all flops that represent your range?
Shoving isn't really the worst thing, its not optimal by ANY means but your still going to pick up 1.5 BB's and put yourself in a ton of flips. A thinking player might interpret that kind of shove as a 33-66 "I know I have the best hand but I'm not good enough to play postflop so im going to do this" type of situation.
Ideally with a 20 BB stack you would hope that a player would open so you could reshove, therefore giving yourself the opportunity to pick up a worthwhile amount of dead money or possibly contest in a flip that would put you back in contention.