I use a length of pipe insulation to roll up into the hood when i roll it up to pack it away.
This helps prevent creasing on the plastic rear window and also gives a bit of packing to fill the space between the rolled up hood and the tonneau cover.
a collection of classic car tech tips, tricks, ideas and information all about performance, modifications, maintaining the MG MGB and GT from across the Internet. Also tuning, servicing, repairs and mods on my own classic car a 1975 MGB Roadster