because Halis are almost always down on or near very bottom.
rarely (if EVER) will be swimming around thru mid to upper depths of water column, where a typical flylined bait will be positioned.

Got it. Thanks!

Make your own stringer line
 

Consider instead of a game clip make your own stringer just like the ones you use for trout. Just use a longer metal stake of piece of solid metal dowel rod (12" or so long, 1/4" diameter... bought from Home Depot), and attach some nylon rope to it with a crimp covered by some duct tape.

You tie off and string it through from the gill to the mouth while the halibut is in the water. 12" easily clears the teeth, they don't react to it, and its's easy to knot it off. Either way (clip or stringer), clicker on, and reel out of gear with your thumb on the line before the gaff shot in case it runs down.

There are multiple uses for rope out there (tying off a thresher by the tail to let it bleed out before bringing it in). Try that with a game clip.

My largest halibut on the kayak is 36 lbs.

Jimm H.