Old question about spinnakers and racing
My sailmaker unequivocally answered "symmetrical". But I''d say it depends on the crew you have available, and the races and ratings in your area. You want to have a competitive opportunity, but if you crew can''t handle a big symmetric ''chute, the specific races in which you will compete don''t have long runs, are mostly around the buoys, the ratings kill you with a spinnaker of any kind anyway, you will mostly be racing ''one design'' etc. you can make appropriate compromises.