Been noticing that whenever a helium balloon is used, the balloon is tied directly to the line (using rubber band or string) so that it doesn't move. Was thinking that it might be better to allow it to slide along the line to more easily control the depth of the bait. The kite rig uses this sliding method so that you can adjust using the bait rod without moving the kite. The rig I was thinking of uses the 200 or 300lb escape proof swivel. The ring on those is pretty big. The ring would work just like the release clip on the kite. The only difference is that it wouldn't release. The swivel just slides down towards the hook for retrieval once the fish is unhooked. I don't see friction being an issue since during the fight the swivel is sliding towards the fish underwater. The only snafu I see is that bits of balloon and rubber band might foul the swivels progress down the line. Unlikely considering the size of the ring but any other good reason why this won't work? P.S. This would be done off a private boat fishing caballitos as bait.