Resources
Floating Row Covers, Plastic, Accessories and Resources
Here are some resources for purchasing floating row covers, plastic, or other season extension materials:
Floating Row Covers, Supports, and Plastic
Seven Springs Farm (they do custom cuts)
Building a High Tunnel or Caterpillar Tunnel
Purchase a kit from Farmer's Friend (my cousin Jonathan). This is one of the most cost effective options unless you want to do everything from scratch!
Here is an instruction mannual from Johnny's Selected Seeds on using their Quick Hoops™ High Tunnel Bender to build your own metal high tunnel out of 1 3/8" fence top rail:
Here is how Windflower Farm made their own caterpillar tunnels:
Caterpillar Tunnels at Windflower Farm - University of Vermont (PDF)