light weight righting

What is the best way to right a 16 with a light crew. I weigh 150 lbs. and my wife weighs 105 lbs. The system we have now does not work well enough for us. I have no problem with a heavier partner. Any hints or devices that give better leverage would be much appreciated.

I used to keep a duffle bag with shoulder strap strapped to the underside of the tramp lacing near the mast under the bag with my righting line on my H14T. Filled with water and strapped across my back it added 50+ lbs of weight which was enough to pop the mast out of the water.