for trigger,my party is crono marle ayla.final kick is one of the ultimate attacks with one target,btw (along with gatling kick,which does basically the same damage).you also get aura whirl (good,unless compared with slurp kiss of course) and double charm.

for cross,my party is serge kid sprigg.yes,sprigg (what the heck?).sprigg has slash dopplegang,and i just love that z-slash triple tech.