Finally got my ballast close to dialed in on my old Kamberra. I think I had ~500# left rear, ~800# center locker, and ~800 under left windshield. I didn't realize I had so much in the center locker, so I'll try a little less in it next time and see if I can't lengthen the pocket some. Just estatic I could get a repeatable decently surfable wave finally. lol. Oh yea, 9.6-10.2 mph by GPS.