First of all I'll say I can appreciate your point of view and conservationist attitude. I respectfully disagree.
If we were talking about an Ozark stream or any fragile ecosystem I would agree wholeheartedly. Many of the small rivers and creeks in Wisconsin, for instance prohibit fishing for bass during the spawn. Not on lake Michigan and there is solid data to back that up.
I'm actually pretty familiar with the spawning process in general and more specifically the northern smallmouth.
Also your attempt to belittle my fishing skills I think colors your profile more than mine. I really had not expected that kind of reaction on this forum. Maybe I was wrong.
The fact is I usually use whatever tactic works the best at that given time. I can't imagine your opinion on powerbait!
As far as predation on the fry/ eggs you may be interested in a study from the Indiana Department of Fish and Game:
"Bass fishing during the spawning
period, or during any period, is only harmful
when anglers take more than a lake can
replace. It makes little difference when
individual bass are removed, whether during
the spring, summer, fall, or winter if the
overall number of bass taken by anglers is
too high.
Biologists generally believe bass over-
harvest occurs when more than 40% of the
population is annually taken by anglers
regardless of the time of year. Even when
over 40% are taken, bass reproduction is
more than adequate to replace the missing
adults with new recruits. The current 14-
inch limit, as long as anglers comply with
the law, in theory protects 100% of the bass,
including many sexually-mature bass, up to
14 inches long