Hi : I hate to mention this but anybody who fishes a tailout with a float setup had his brains scrambled for breakfast.
A float keeps your lure travelling at the same depth throughout the drift;but the bottom slopes up in a tailout.If your going to fish tailouts with a float you have to set the float for the deth at the head and progressively hold back on the float so the bait or lure rises as it drifts into the bottom of the tailout.
Of course its more sensible to driftfish in a tailout or even better flyfish.
coot