I just got off the phone with Richard Hensch who's done Maule training for many years and enjoys an awesome reputation and he can certainly help you.
He runs Florida Seaplanes
and can be reached via Email: firstname.lastname@example.org
and through the phone number on his website.
Very nice guy and one of the first guys I'd call when trying to get back up to speed with floats, especially with a Maule.
Of course, our sponsor here may be able to help, but I haven't heard back from them yet. I'd suggest giving Jones Brothers Seaplanes a call.
Not sure if they have access to a Maule. You can find them here: http://www.jonesairandsea.com/index.php ... &Itemid=40
Cheers & please feel free to let both of them know that seaplaneforum.com referred you...