I bleed all walleyes that come on my boat! I put them in the live well and cut their throat at the base of their gills. I even do it if I have minnows in the tank for perching later in the day. I use a stand pipe that has a screen on top and turn on the pump and let it run all day, once full to the top of the stand pipe the water goes out the stand pipe back to the lake. The fish remain in the live well for about 10 min before removing to the cooler. The minnows are no worse than before as the water changes out very quickly.