I know this site is generally 'anti-Spearfishing-tournaments'. But I thought I'd share that my team just won Nationals out of Tarpon Springs. I dove with Ritchie Zacker and Kevin Sakuda. It was my first time shooting Nationals, and possibly my last. I figured we had a chance with home field advantage.
I shot all 14 of my fish with 2 of my 57" rollerguns. On one I used Speardiver holeless bands. They are so powerful, I never even loaded the bottom loading pin.
I placed 3rd individual against 50+ of the best tournament spearos in the country. So therefore, rollerguns are the best! The End.