Whats the best and safest way to clean a scope? How does one clean the lenses?
I use Lens Pen Hunter Pro the same they use on cameras and binoculars lenses. Check this website:
Back on the topic, I wouldn't trust submerging the scope fully in water. It's filled with nitrogen, so the body should be waterproof but I have removed the side parallax knob on my N/S before and the insulation of the mechanism for turning the knob is only one rubber ring under the knob. The rubber should hold water if spalshed by rain but if it's fully submerged I think some water can penetrate the mechanism inside.