Pork I agree with (intensionally) spotting other boats. Should be illegal but who am I kidding. That requires enforcement personnel being on the PA waters.
The reason for not allowing such lights while underway, is the "docking light" on the front of your boat, blocks other boats from seeing "your" navigation lights.
That is straight from the horses mouth, as he handed me my warning.
heh hehh, dam my luck, I was trying out my new GoBee remote bow light when a nice waterway patrolman from Ohio was working Pymy at 10:30 PM one night a few years back. oops.😣
Never got stopped on Shenango after dark and I did find it being an advantage, while zooming to and fro with the big horse.
Good luck when ya can get out.
I'm gearing up, for some surf fishin in a few months. Thank you very very much.
Stay safe & be well.