The 08 hull has tubbies built in already, it would overkill.
[SIZE=+1]
Tubbie Destroyer Sponsons [/SIZE][SIZE=+1]
1996-2007 SJ[/SIZE][SIZE=+1]
Freeride[/SIZE]
http://www.blowsion.com/detail.asp?PRODUCT_ID=02-01-013
[SIZE=-1] [/SIZE]
Benny
The 08+ does have sponsons built in, but it is not overkill. The 08+ built in sponson is smaller than the 07- sponsons. The 08+ destroyer is smaller than the 07- destroyer, so you end up with the same ride. The 08+ hull still has deeper chines, so it will still ride different and carve better.
I have ridden the 08+ with the destroyers. Much more stable than my 07- w/o destroyers. I just got my destroyers but I have not installed them yet. The 08+ I rode with the sponsons was much more stable in chop. It reduced the side-to-side roll of the ski (think extended ride plate but for the sides). It also kept the ski upright more than my 07- so in the corners it didn't lean so hard. I could stay more upright, more controlled and with less fatigue. (I also rode a 08+ w/o sponsons this same day. The front rode the same as mine, the difference was in the rear chines prevented the back from sliding as much. It still had the side-to-side roll my boat has.)
I went with the destroyers for 2 reasons...
1) I'm not sure I want the sponsons. Right now I am racing and I know they are good for surf, but not sure about flatwater and etc. Being able to remove them gives me a 'tuning' option. I am sure I will never use it, but I have that option.
2) Easy install, easy removal. They cost twice what the other sponsons cost, but they are worth about $200 used. If I don't like them, I can remove them and sell them. If I switch boats, I can take them with me. If I get rid of my SJ, I can part them out, because a SJ hull and sponsons is worth more than a SJ hull with sponsons. Unless you break them, your net cost is lower than you might think. Additionally, you don't have to worry about losing them. Some people remove the screws from the other sponsons to keep the finish shaved, but then loose a sponson, making their net cost the same. Lastly, time is money, and if I can do the job in 20-30 minutes, I don't need to have a day off work spent installing, glassing and blending the other set.