I have a gravity 3 factory ballast installation.

We primarily wakeboard, but want to add some surfing this summer. I do not want to make extensive upgrades to plumbing or pumps. And I am not sure how long we will have this boat, and I always seem to be on a tight budget due to all of the other family activities we spend on.

I would like to add more weight in the rear lockers but I am not 100% sure what will fit in the rear lockers. The more I look the more different bags I see. The only thing we store back there underway are the extra ropes. So lots of room. What ballast bags will fit? I see there is an 1100 lb fly high, has anyone stuffed one of those in there? I really just want to hook up the factory fill and drain hoses and that it. I am OK with the fill / empty time and I am sure we will all be surfing on the same side so time is not an issue.