I’m interested in spearfishing, obviously. Traveling capability is a concern. My large bag has a 31.5” interior dimension, so i would like to stay within the 80cm (31.5”) lengths. I read, thus far, an inverted roller avoids the band’s dead power zone (utilizing preloaded power) enabling power equal to a longer gun but in a shorter length, true? So, my interest is a short (luggage-able) gun, made of carbon (light weight and strength), with inverted roller technology, am i on a good path so far? Also, very accurate. I hope to fish from shallow to pelagic areas. What spearguns would you suggest and why? Thanks in advance