Weight transfer is critical in light air especially when pointing. Being able to move the bulk of the crew weight where its needed to make the boat go is quite benefical.
I tried two tri-babes on my 22 with interesting results. All three of us wore trap vests but only two were on the wire at a time. I was using my roller furling spin with the Fancor furler. After working out the methodology of tacking, who does what, etc. we had some really fun times. With the standard chute it seemed very beneficial with me doing the spin chores with the help of a 110lb crew. After some practice they both tackled the spin chores but were about 1 minute slower getting it done. Theres no substitute for bulk when tugging on a spin... We sailed about four times like this and it worked well for us.
Total crew weight was 425lbs... thats 25 lbs under the max recommended crew weight. With one crew we were as low as 325lbs which is the minimum.
Toooooooooooooo Baddddddddddddd for me one is pregant and appears not interested in crewing any further and the other has transferred/moved away. I have been swamped with work since March anyway... so maybe next year I will get to go somplace where you don't run out of room before you get the boat tuned.
Neither had a problem steering the boat or handling the mainsheet chores with a 12:1 in moderate air under 15 knots.
thom