It isn't even a good idea. If you do the math you're much better off buying what you need. The trick, of course, is knowing what that number is beforehand. We started out looking at 150 pt contracts and ended up at 350 but have no intention of renting. Who knows? We might buy more.
I'm not saying I'd never rent if something came up but it'd have to be the rare exception. When you factor in TVM the difference between rental price and dues does not make sense to plan on it. You're wasting money.
To clarify, I'm solely talking about this as a habitual plan, not at all what you're talking about
@Goddard Family Adventures. We also looked at a loaded contract and we'd have had to rent out a portion of the 2019 points most likely.