Good luck.. Good leases are hard to find..
Word of mouth is the best I think. Ask around at work, taxidermy shops, deer processing places etc. Alot of those "deer business's will have a board with different junk on there for sale. Look for leases there as well.
Tell everyone you know that your hunting for a lease and pray some positive news comes back to you. Sometimes you can get lucky and find one in your local sales papers but thats kinda rare.