I would like to shop for an asymmetric spinnaker and need a little help as I have only limited experience with spinnakers. First, where can I get the right dimensions for the luff, foot, and leech. If there is a correct size to have, is it acceptable to go somewhat smaller? I have a 37 Legend which I really like except for downwind sailing with larger waves and not enough wind. I feel that with the asymmetric I could get the main off the spreaders and still keep enough pressure on the boat to keep it driving in lighter conditions. The fractional rig just doesn't have drive in the front end and allows the boat to wallow around too much. I was considering that a somewhat smaller sail would make it easier to set and take down for my wife and I.Any comment on these ideas from persons with more spinnaker experience on these boats would be greatly appreciated. I have some spinnaker experience with beach cats, 30'Stilletto, & 32' Ericson but most of the time it has been too much trouble to be worthwhile - this may be adifferent situation. Thanks