Just so you know, Aftco has corrected that problem with the short bent butts, they are now making them about 2 inches longer so they will lock into almost every rod holder, except on some big sportfishers that have the deep holders. You probably have the old style if they dont lock in......just thought you would like to know........
I second the "stor-butt" ....... thats what every one of my rods has on them, that way I can fish bent butts or stright butts whenever I want, but they get pricey that is for sure