I will post up how long it takes to fill all 3 bags with the original Orbit valves and then replace them with the new Irritrol valves and see how much the fill times decrease. :D
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You will notice a decrease in fill times when filling 3 sacs, however, how often do you fill 3 sacs all at once in a day? You will notice the difference in filling one side like when you surf since the pump will be dedicated to that one sac. Also, when wakeboarding, once your center sac is filled all you're going to be doing is slightly filling or draining rear sacs to tweak the wake. Personally, I did the mod to decrease filling times for surfing...not to decrease filling all 3 sacs. I'm pretty sure that I'll never be at the level of wakeboarding to need to fill all 3 sacs to capacity.
I can see filling the Outback V but the weight on my XLV even empty is pretty big (even my buddy who's family owns an X-Star says it's a nice rampy wake). I've never filled my ballast full for wakeboarding...although I think it would be fun just to see what it looks like. That would be 3,000lbs of hidden ballast
I got my valves today. Can't wait for the weather to improve so that I can install them!
http://www.petsandbeyond.ca/valves.jpg
You're half way there. Looking forward to seeing your results.