You'll be surprised !

My own F16 (homebuild) is 120 kg and I can even tell the difference between my own and the newer 107-110 kg F16's when handling them on land. Especially when putting it on or off the cat trax singlehandedly. The difference between lifting some 50 kg at the bow with one hand or 70 kg is significant.

Currently the F16 sailors are the only ones at my club who walk up their boats on the incline to our "harbour" all others use the electric winch. The difference between a 107-110 kg and a 150 kg in tipping it over to get to the top of the mast etc is also significant. Downside of course is that in a good blow the wind can blow it over alot easier as well. When in doubt I just flip my boat over on the beach and have it lay flat.

But I understand your other points fully. Provided racing is a big consideration for alot of sailors

Wouter