These pictures are here to augment the footbag.org Rod Laver modification guide found here. Follow the first two steps then come back to this guide. I know this guide could be better (better pictures, clearer instructions, etc), so if someone feels they can make a better one please do.
Removing the canvas from the inside and toe surfaces of Rod Lavers increases bag feel and reduces weight. Notes: Some players have started removing the mesh instead of the canvas on the inside surfaces of their lavers. This guide only shows how to remove the canvas, but that modification should be easy to figure out. Although they are intact in the pictures, be sure replace the stock insoles. Insoles made of Neoprene, such as the Spenco Court/Aerobic or Cross Trainer insoles, do a much better job of absorbing shock and reducing leg and back injuries.
Tools needed: Exacto knife, nerves of steel.
Before starting: let the lavers float upside down in a sink of hot water for 30 minutes. This makes the canvas swell up, which weakens the glue between the canvas and the mesh. Let them dry overnight before continuing.