Some Reputable Ultralights use the thick coppery swedges (doubled up on critical wires). You have to measure to make sure you have the right squeeze, but that is good enough for me.
I am more afraid of trap line/wire/hook breaking than demasting, actually. Some one will eventually find the boat...
A few times the time the crew has wondered why I'm sheeting so hard with the hull coming up, only to turn and find... no skipper. (Skipper had death grip on mainsheet, ploughing thru the water)