My dry box doesn't have frame hooks/tabs/whatever, and I'm debating having some welded on. I currently have it slung with a pair of loop straps, and sit on a flip seat on top of it. I haven't noticed much movement once I'm settled, but I haven't run anything really bouncy with it and I'm concerned about it shifting at an inopportune moment. Are there any downsides to having tabs welded on? I feel it would be more solid, but I'm open to the possibility I'm an idiot as well.