I mentioned this before and caught some flak for it being considered by some a non-sporting way to fish, but as far as I know it’s not illegal. I believe it’s illegal to leave the rod unattended say overnight, but

I don’t think you being a few feet away or sitting alongside would be considered “unattended”? So I’ll let you decide how ethical it is.

I've had success with fishing for LT mainly from shore in campsites with deep water access by the following method.

You need a weight heavy enough to cast out and hold the bottom. I like either the Pyramid or disk type, 1 oz. will do fine. You want to use a slip sinker type set-up so the fish can grab the bait and the line will run free. I never used clear line to the hook, but you could if you want.

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You want a variation of the Sliding sinker bottom rig
I use barb-less circle type hooks.  The smaller the better. You want the bait to float free of the bottom maybe 12-18”.
I use a Gulp minnow or leach.

After you cast out from shore and set the rod upright in your make-shift rod holder, you reel in all the slack and put the reel in free spool mode.
I often will do this first when setting camp especially if the wind is up and I know I won’t be going out in canoe.

Keep an eye on the rod tip as you do your camp chores. Same thing at night, you could put some sort of reflective material/yarn on rod tip to check its action. When rod tip starts bouncing and/or you see the spool free running. You take rod out of holder drop the tip, take reel out of free spool and reel in the slack and set the hook with an upward sweeping motion.

With braid you just flick your wrist and you’ll set the hook. Circle hooks will grab the fish in the corner of the mouth. Worst case scenario the line breaks off and the hook stays in the corner of the mouth where it will either work its way free or rust off.

Not for everyone but it works great as long as you pay attention.
Did that one year on Quetico Lake and instead of a LT, I caught numerous freshwater Ling Cod ,which I cut up an put in Cache Lake Fish Chowder.