mounting center doesnt sound like that good of an idea because even though you still have alot of surface area under the ski and still alot infront of the boot/binding b/c its a big ski, by moving the mounting point forward you are adding more surface area, and thus float, to the tail. My personal experience with mounting close to center has, for the most part, not been good. because of the added SA(surface area) in the tail, it cuases the ski to float more balanced and flat, rather than the natural/more comfortable backward leaning float. personally, when my ski floated flatter due to center mounting a powder ski, it caused my nose to dive more often if i did not keep speed. Sure it was fine when i could keep plenty of speed in the open powder bowls, but when i slowed to make tighter turns in trees, etc. i experienced more nose dive, not alot of nose dive, but more than i want. thats my personal experience, Although im sure you could figure out a spot to mount where you could find a nice balance. P.S. i mounted about 3 cm back from dead center.