Weighting a Strand Craft 122?

I just picked up a Strand Craft 122 this weekend. I normally don't buy a boat without riding behind it first, but I just could not pass up this deal. It's limited production (6), so i had to act fast. I figured with the free supercar as ballast, it would throw a pretty good wake. So, if anyone has experience weighting one of these bad boys for boarding, please let me know.

Pics
http://www.strand-craft.com/

and info:
http://www.nydailynews.com/money/201...as_a_free.html

We used three triaxle loads of 70,000 lbs 1" Rock set in mortar outboard of the machinery spaces. Fuel bunker is kept full in the belly and day tanks for centering ballast. For the surf wake we installed one of those 20,000 lb sleeper sofas my wife is fond of and I just move it around the salon at her command.

yeah my buddy has one . he just pulls his hummer on board and pulls it just a hair to the left to offset his weight driving it . man you should see the double ups behind this boat!talk about flying high,thats an under statement.