After extensively bossing with my Rikauteri, it appears that I do more damage with select Technics for
Banish Arrow than others.

Out of all the Technics, I take the highest damage with Ilbarta chain (on ice-weak bosses). After Ilbarta,
it would be Ragrants (thanks to the Light Mastery build); after Ragrants, it would probably be either Gimegid
or Zonde [Type-0] (when the final hit doesn't get whiffed); after those two Technics, it would be Nafoie. As for
wind, I haven't used Nazan for, since I really never soloed a boss, that was wind-weak, as a TE/BR yet.

With that all being said, what are ways to increase bossing damage with those other elements (besides Ice
and Light)? Should I just craft those bossing Technics for more power or reduced casting time (if available)?