Guys keep a bottle of Mt. Dew or KY's own Sundrop in the boat... if you have a bleeder then rinse it out with water (swirl around) then pour some pop into their mouths on the effected area. It coagulates the blood and stops almost instantly, sprinkle a little "rejuvenade" or "please release me" and the fish will be fine 99% of the time.

If you put a fish in the well that is bleeding without stopping it or rinsing it off (the blood) you take a huge chance of killing other fish in the well because the blood coagulates on the other fishes gills.

Oh....lol, Diet Dew or Diet Sundrop are equally effective.