Right now I'm only having one fat sac in the locker in the middle of the boat. My concern is that I don't think that only 600 pounds is enough to make a great surfing wave.

It will sink the boat but ...

But we will always be around 3-5 people on the boat so should I worry or with the people sitting in the back it will be okay?

If not this is my other option

http://www.ebay.com/itm/FLY-HIGH-JUM...item45f1d60320

But will it fit in the locker in the rear of the boat (Moomba mobius lsv 09)

Thank you