[Marwan]

to me the reeel essentially serves the same purpose as float/line but with the added advantage of being more usable if you hunt in caves or areas where a float line would constantly tangle/be inaccessible like kelp beds as well...for a badly shot fish, i dont think you can use a reel in fighting a fish like you would on a rod...
but depending on the length of the reel line (typically 30-50m) i suspect it gives you more slack line versus a float line (20m) that a badly shot fish could pay out (and maybe getting into a hole where you might have a second chance to land it) before causing tension on its flesh and ripping out...