Welcome to the forums, DUI is a well trod path to ebikes. Many of us however keep the ebike habit long after we have get our licenses back
Don't know what the cops are like in Utah, but most people on here (regardless of the state or country they live in), seem to all agree that as long as you are sensible, and keep to reasonable speeds in built up areas and if necessary ghost pedal (ie pedal even when it is doing nothing), then you are fine. For example where I am you are only allowed to have 200W, which barely gets you up a hill, but as long as you ride sensibly, the cops don't really care. As far as I am aware, only one person on this forum has been ticketed with a non-compliant ebike, and as far as I know one other person got a warning. But given the number of people getting around on this website that gives you an idea of the realities of the police approach to ebikes.
It's common sense really, if you are blitzing through a built up area at 40mph then you are going to get hassled, but if you keep to reasonable speeds and ghost pedal, personally I don't think you will ever see the police, the great advantage of ebikes (if done properly) is that they make next to no noise, so why is a cop going to bother you unless you are going too fast or being silly.