Right, this has got my attention because I had something very similar happen near Loch Ness about eighteen months ago. Silent, low-hovering, no nav lights - just this steady amber glow that seemed almost too deliberate to be anything natural.
First thing I'd ask: how long did it hover before moving or disappearing? The duration is crucial for ruling out things like Chinese lanterns or even certain drone configurations. Lanterns drift, they don't hover. If it was stationary for more than a couple of minutes you're already in interesting territory.
Also worth noting whether the water below it was doing anything unusual. What I witnessed seemed to cause a slight surface disturbance - almost like a vibration - which I've since read is reported in a fair number of genuine UAP encounters over bodies of water.
A few things I'd suggest:
Note the exact time and log it somewhere (weather conditions too), Check FlightRadar24 retrospectively for that window, If you have a trail cam or even a decent phone, get something set up pointing at that lake tonight - Reolink do affordable cameras that handle low-light surprisingly well
The lake angle genuinely fascinates me. There's a growing body of thought around USOs - Unidentified Submerged Objects - and some researchers believe water sources act as some kind of focal point for these encounters.
Don't dismiss it and don't over-explain it yet either. Just document everything while it's fresh.
Has anyone else on here had repeat visits after an initial sighting like this? Curious whether that's happened to the OP.