Bill
Odds will depend highly on the agency actually having a BWV owner who can book the reservation for you at 11 months. If you were dealing directly with a BWV owner, I'd say your odds are between fair and good. Going through an agency, I'd put your odds at fair at best.
They're likely to tell you that inventory changes daily. Because in all seriousness, most DVC owners booking via an agency are not going to be stalking at 7:58AM for a booking. There's at least one broker who won't take requests for BWV Standard or AKV Value/Club because it's just not realistic to budget against as a renter.
The problem with the agencies (from an owner's POV) is that they don't pay enough to owners at "preferred" resorts like BWV or VGF to make it worth their effort to commit their points 11 months in advance. I could get paid $14/pt. now or wait for 4 or 5 months to decide to rent out my points via an agency and still get $13/pt. In the meantime, the agency collects 100% of the renter's fee but only sends the owner 60%-70% of it immediately while holding the rest until the guest checks in. While it protects the renter, as an owner would you want to provide a "product" and then wait up to 11 months to be fully compensated for it?
Take the time to familiarize yourself with the Rent/Trade board. Read the threads to see how owners respond to potential renters. You'll get a feel for how the rental process works just by lurking. If you see a BWV owner on there that you think you might be able to work with, there's no harm in contacting them. However, you're 16 months away from your proposed stay. It's too early to book and if an owner is posting now, they aren't looking to rent their points out 5 months from now. They'll likely prefer a renter who is ready to book (and pay) now to one who won't be booking for several months and may change their mind in the interim.
