fat sac location

I just recently bought a tsunami pump and fly high pro x tube sac. My intentions were to put it in the ski locker of my 01 SangAir (Direct Drive). However, when thinking about that I began to realize that the sac will be right in front of my engine, which already weighs a lot. I already have 700-800 pounds of stock ballast in the rear, but was also considering placing it in the rear storage compartments in the back of the boat. Where would the tube sac be more effective? Also, consider the lost storage space if it goes in the rear compartment. Thanks

I would say try it in the back, then try it in the locker and see which way you like the wake better.