The San Juan River has world-class water for fishing. We have a boat and drift down the river with our flyrods. Mainly catching rainbow and brown trout. Great success rates. I can fish up to 2 people in the boat. I'm sure I can find a rod for you to borrow but if it would be best if you could bring your own fly rod.
My parents have a few extra rooms they use for an Airbnb that you could possibly use or I can recommend a local hotel.