If your goal is to rent do NOT deposit your "true" weeks. Try to rent your "true" weeks first and then deposit if they don't rent.
Deposited weeks in an exchange company are only of value if you are holding a confirmed exchange reservation within a designated resort. Floating exchange weeks with a choice in over 5,000 resorts may seem like a dreamy situation, but in reality it's a rental nightmare.
Keep in mind, that many exchange companies have a strict policy against renting exchange weeks. However, if your exchange company does allow rentals they will surely require a guest certificate. If you simply pass your exchange reservation to someone else, that someone else is you upon check-in. Guess what? You checked into that timeshare and you are now responsible for everything! A paid guest certificate is a must for an exchange rental and provides additional protection for both parties.
Depositing your weeks should be your last option for saving a week - not your first for renting. Keep your week until the very last deposit day for your chosen exchange company (usually 14 days prior to the reservation start date). Check with your exchange company and resort for their latest policies regarding banking. This gives your rental agent the optimum amount of time to find a renter before depositing, so you do not incur additional cost.
And above all if you want to rent do not give up your usage week to anyone by signing a quasi rental-exchange contract. These companies will have the right to exchange your week first and then basically indicate there was no rental. Bye-Bye rental. They may have used your week for free without proper compensation.
FINAL NOTE: IF YOUR GOAL IS TO RENT YOUR WEEKS, DO NOT DEPOSIT YOUR WEEKS UNTIL THE VERY LAST DEPOSIT DATE. DEPOSITING YOUR WEEKS SHOULD BE YOUR LAST OPTION FOR SAVING A WEEK - NOT YOUR FIRST FOR RENTING.