When there is a moderate breeze (11-14 knots) and I am going outside the harbor solo I go out under main alone and the boat (Omega 14) sails and points fairly well I must say. However, I have one problem. When I'm on anything but a beat the mast pumps when I go over a small to medium sized wave. So like every few minutes. I noticed yesterday that when I'm on a close reach the forestay is loose and the windward shroud is very tight. I'm not exactly sure what happens, but the mast seems to go back and forth with a bang as I hit and/or come off a wave. I secured the lazy jib halyard to the bow and tightened it up as much as I could and that may have helped, but only some. I have my rig fairly snug, not loose. When at rest with no sails there is some tension on the forestay and shrouds. Sure is a lot of tension on those shrouds when sailing! Is this mast pumping normal? If not, is there a simple solution? Boats I have had in the past had the mast secured where it came through the deck and some had backstays. I've never had this problem in all my days of sailing before. I know this is mostly a 14.2 forum, but I will appreciate your comments as well.