Lease term, price or deposit?

[DG H.]

In my small town rental pool...it's common for tenants to sign a year lease and leave before the lease is up. I've gone to court, etc and all story short it cost me a lot of money with no recourse on the past tenant.
I've got a small 4 bedroom home that is hard to rent only because it falls in the middle of price and size. I've had this home for 5 years and it use to rent easily ..even though we keep it remodeled and ready to rent it's getting and harder and harder to rent. Right now I think it's all about the deposit and the length of lease. I want a year...hopeing I can find someone that might stay a while. No tenant for a month now. The last tenant stayed 3 months on a year lease and moved out of town.
Everyone wants 3 months tops....I don't want someone to mess it up and then move out when it's harder to rent. On the other hand I can't find a qualified tenant that will stay longer.
Month to month? Year Lease? Lower the deposit? Lower the rent. Rent and deposit is lower than anything in town. $575.00 rent $500.00 deposit.
A side note. In my area there's been a big fire where people lost their homes. I'm getting calls from families that want to rent for 3 months ONLY.
Help me figure this out. I'm at a standstill..
Thanks to All.