As someone pointed out, where one lives is a factor. I live in the DC area.
For the equipment on the deck, I use an outdoor rated power outlet box that comes with a 15-20 foot cord. In the shed, I use an indoor rated outlet box with a long cord for computer, fan, etc. I connect the indoor outlet box to the outdoor box. However, I keep the outdoor outlet box in the shed when not in use.
I put Ethernet cable/conduit in the backyard natural gas line trench when we had pool installed. So, using SkyX, I have the option of total Ethernet/USB communications/control from shed or controlling the shed computer from home basement via home network. Protecting the body from the environment is more important than protecting the equipment.
At the end of January, I may be able to have a view on whether the Telegizmo 365 cover works well in my area. The cover is protecting scopes, mount, focuser controller, dew heater controller/cables, cameras, Rigel finder, and power/communication cables.
Kevin Hannon