Fished pro BASS tourneys for over ten years with no lure sponsor but I would not risk a fish over a crank. What you said about missed fish on singles will go up. But for searching for fish and rec fishing we used many single hooks and even bent then down the hook point or cut it off so we got strikes and no hook ups as to not spook them to bad. But with crappie I have no idea as I am usually using single hooks, brush and trebles are a bad combo.