There are few 2 BR units available in HI as most resorts don't have many, most are lockoffs and deposited separately, most of the rest are rented out by the owners and the remainder normally go to the internal trading priority members. For 3 BR units you can multiple the previous info by 100. For Maui, only One Napili, Maui Marriott (will never happen), the Schooner and SOK have 3 BR. The only real hope is going to be off season and short notice through II. Even the 3 BR only sleep 8 at all the above except Marriott. One would have a much easier time trying for say 2 one BR units or a 2 BR and studio. Realistically for a 3 BR, one should count on a cash rental. But get one that's cancelable and still give the exchange a shot. That way you can get your air set and wait until one approaches the cancelation date of the cash rental before giving up on the exchange.