I have seen many questions on how to stop your shares from being shorted. The other often discussed topic is what is the minimum share price or market cap before institutional traders will consider trading a particular stock. I really don't think there is a 100% correct answer across the board for any of these questions.
Thanks for info raptor. I thought if you put a sell order in at a ridiculous high price they also couldn't be loaned out but who knows. Yea stock certificates can be a pain to deal with.