I'll be staying in Laihania (sp?)...I'll keep an eye out for rental options.
Lahaina proper has the harbor where you can sail on either a Santa Cruz 50 or a retired AC boat. The AC boat is pretty fast and you will get wet.
North of Lahaina is the Kaanapali resort area. The Hyatt may have a rental Getaway that's not in very good shape. North of the Sheraton/Black Rock there a rental place that has a Getaway that is keep in very good shape by an old cat racer.
There may be some Waves in between.