Perhaps the biggest misconception of the BRG program is that you only get one night free. How can you make a vacation with just one free night? Don't let this naive thinking enter your mind!
Sure, they one-night stays on paper, but there are easy ways to stay more than one night and still play by the rules. The Wyndham Rewards BRG terms and conditions state:
Only one free room night will be offered per stay. A stay is any number of consecutive nights spent at the same hotel, even if the result of more than one reservation.
To be more precise, that is one free night per stay per person/unique address. If you have a friend or travel partner who lives at a different address and has a different last name, feel free to book every-other-night under your name, and the same for them. Thus, you can stay 8 nights in a row if you really want. In my experiences, I've never had a problem - just make sure the respective person is checking in on their respective reservations. No one can tell you who can stay in your room with you, and who can't.
Another way to do it even MORE legitimately is to find two BRG opportunities in the same city - I've done this several times. Under your name, you may book one hotel for every-other-day and the same for another hotel. Then, as long as you don't mind shifting back and forth between hotels, you can enjoy a two week stay for free.
Remember, due to the new rules implemented on July 25, 2008, you are now limited to 10 free room claims per month (one per chain). All of your multiple nights (at the same hotel) would need to be booked over the course of several months. With two or three travel partners, this can be expedited.
Your best bet is to plan your trips at least 6 months in advance. Me and my family have not paid for a hotel in over two years, because we always find the hotels we need. They always come up eventually for the dates we need - everything works out in the end. You just need to be persistent in your searching, and give yourself enough time to plan things out perfectly.
Remember, 10 free nights per month is 120 free nights per year. That is plenty - you just need enough time to arrange them in a suitable manner.