First off--the last time I was in Beatrice, NE a cold snap hit while I was on my motorcycle (38 degrees). So, I was a bit scared when I saw your location.
Second--I don't know that I'd do that. I would talk to them, but only as an advisor. The losses that result from bad check writing are taken by the merchants who accept the checks, so the DA usually sends the letters. My advice is to place a restriction on the account based on abuse to minimize your "losses" (NSF fees, most likely) and prepare to charge off the account if it gets to that. Begin a pre-collection process to notify the customer of his/her obligation and document results of the (attempted) contact. Try to set up a payment plan and follow through with the results of that.