We discussed this a few years ago. I have some new views on the subject and are interested in hearing from others. My mast was pumping so bad the other day i thought it was going to break the shrouds. I was out in a fresh breeze and he waves were building. I was under main only. I do think the jib helps keep the mast from pumping, but not much. When the main is near centered and pulled in tight that will stop the pumping, but that isn't possible on a reach. If you want to know if your...
Pumping mast on the Omega: again
Pumping mast on the Omega: again