memilanuk
Gold $$ Contributor
For me personally I don't care if E-levels are used, ain't nobody winning BECAUSE of an electronic level in Open because once you're level they really don't move. But I could see some cases where TR might benefit so I can't comment on how TR shooters feel about it being an unfair advantage or not.
I'd say it'd be a fairly moot point.
In my experience, for FTR, one sets up their gun/firing point, and in the process (usually during prep time when you can actually get behind the gun) you level the gun - and lock it down. If you are firing off a solid flat surface ie concrete pad, any form of packed earth, etc. or even off a plate/board, it pretty much doesn't move appreciably over the course of the string of fire. Shooting off stuff like loose sand, gravel, or uneven/lumpy surfaces like some grassy berms can be a different matter - and are usually why people use the aforementioned board/plate. Of course, any time you have to pick up or disturb the gun setup during the string for something like a squib round or equipment issue, you pretty much have to re-do that all over again. Takes about... 15 seconds? Maybe?
During the string, I generally glance at the level to make sure it didn't move, then focus on the flags / mirage / target. After the shot breaks, as the gun recoils I'm grabbing the spent round, reloading and getting back on target. As soon as the gun is on target and stopped moving, I check the level, and then move on to the flags/mirage/target. If I have to hold up to wait out a condition, target repair, whatever, I'll check the level again real quick before moving on.
Having an electronic level would not appreciably speed up the process described above, at least as I see it. Others with more current high level experience than myself may feel differently.
Where it would (theoretically) be of some benefit would be in the potential for increased accuracy / sensitivity of the electronic level over one with a vial/ bubble. There's probably some real advantage there; whether it's something that could be *realized* on target might be a different discussion.
One thing I know I'd appreciate... ever had the bubble on your level split into two (or more) bubbles under recoil, and not instantly recombine? I have. Typically they don't split evenly, either. Then which part do you level off of? Or do you just hope for the best, leave it alone and keep shooting?

Not sure what the electronic level equivalent of that sort of failure mode would be, but I expect we'll find out.