Help me convince "FHU only" friends to try electric only CG

Tell them that you will empty their tanks for them when they get full. :)

Maybe you do the emptying of the tanks, but most of the time I see that it's the men out there doing it. Perhaps they don't want to deal with it every day, don't want to have to conserve, and don't want to go to the bath house.

Maybe you and your husband need to do it yourself and maybe you can get him on board and he can help convince the others.