My husband and I cruised on our 32'' sail boat from Chicago to Tampa Bay, FL, via the east coast, with our 2 year old daughter on board. We had installed life
line netting as well and found it too be very reassuring. We also found that a life jacket was great on
dinghy trips and strolling the docks but when we were under way we preffered a safety
harness with a tether attached to the cockpit. We were always convinced that if for a split second we turned our head we would be comfortable to know that our daughter was attached to the boat and that she would never be lost in the waves behind us (even with a life jacket on). She was very comfortable with a
harness and was able to move freely with jack -lines that we ran stern to bow. The
harness was especially comfortable in warm weather when a life jacket can get a little stuffy. She learned to always come up on deck with her "seat belt" in hand and never made much fuss. We met a couple of live aboard families that were cruising and they all had different safety measures. What ever safety means you do choose be sure to be consistent on them wearing life jackets or
harnesses at all times. Good luck and happy sailing!