It won't hurt the trees anymore than drilling a hole for a spile. It might be hard to get them out, but a saw mill will be real happy you did. Even if you have to cut them out I'd remove them, if the tree has good saw logs. I will never put a lag or screw in metal anchor in a potential saw log. I have never put up main lines or wire, but if i do I'll set some other kind of anchor, a post or wrap around a tree type fixture that can be removed. Is this a normal practice for running wire and lines? My only experience is with 3/16th.
125-150 taps
Smokey Lakes Full pint Hybrid pan
Modified half pint arch
Air over fire
All 3/16 tubing
Southern Ohio