and in the "Boy Howdy do I know what I want from Santa this year" department...

A roller sling!

Built by Headhunter and designed by the same guy who designed the Guerrilla Sling (a longtime favorite of mine) so they had my full attention at the word "roller".

Headhunter calls it the Sea Slinger. Better yet, it is actually less expensive than the Guerilla sling so well worth checking out.