Well, when it was clear that my new Cashmere buckling wasn't going to be "ready" to breed those "crazy, scary, wild women", I borrowed a buck from the breeder I got him from. They only charged me $50 for the lease, but I paid $100 for them to bring him here...which was a great relief to me. They haven't come to get him yet though, so he's been here since Nov! So, hubby says we should just use him again. But, I just as soon they come get him. He's a nice boy, though. Can't complain about his manners...too much. Their herd is tested neg. for CAE, CL, etc.
Admittedly, this is a very "low key" arrangement. I'm not suggesting you do it this way. In fact, I doubt I would send a buck anywhere under the same circumstances. But, this is the arrangement they made and I was OK with it. I hope some others give you their thoughts. I have a friend who leases bucks occasionally, I'll find out what she does and get back to you.