RM and TGW1 Muskrats are not necessarily bad and dangerous to you unless they bore into your dam. Even then they won't cause a dam failure in every instance. You have to weigh the risk. It seems that all who post on this forum about muskrats are in favor of removal. So be it. We keep a family in our pond. The young are hilarious chasing the adults for attention; the adults are hilarious, almost getting on plane chasing mallards.
Beavers, on the other hand..."satamasagana, for jimmy jazz; cut off his ears, chop off his head"

As I have no experience with RES, I can only go on what I remember from a thread on the forum that recommends they are happiest under cover of darkness or at least low light. That's not to say they wouldn't come to a bug light for a meal, just that in RAS or other tanks they do their best work at low light levels, so trying to train them with a bug light in a pool might be less than optimum.

Just a thought.