I have a sloping lot towards the water here in VA. This puts my first deck about 18 feet off the ground and the second deck (from my master bed) about 30 feet off the ground. Any suggestion on how I could screen in both decks. We have outstanding water views the wife wants to enjoy bug free in the summer time. I don't want to be working off a ladder 30 feet in the air if I can help it.

If you don't have roofs over decks, you can do all the work from the deck.

Build the framing for the screens and install a stop on the framing. Make the screens and install in the opening and install stops to hold them in.

Chuck

Frame the openings so you can used premade or aluminum framed insert panels. Look at the screens on your house and build and install the same way. An alternative is to use the tracks that spline the screen into them. Look at the screen section at HD, they have the spline insert tracks. Do it all from inside, step ladder only.