I used to questioned the use of crash bungs. Then I decided that I needed something. Ordered a set from MGS. Nice people! Even got a discount for sending some pics of them fitted to my TDM! When I laid the bike on its side to check how effective they are only the bottom of the silencer just touched the ground with the bike resting on the bung and the handguard ( I got straight Magura Fat Bars fitted!). Happy with that.
On a trip to Wales I parked the biked in an enclosed hotel car park with level ground on its side stand. The bike fell off its stand onto its right!, yes you are reading that right, side. No serious damage. Some scratches on the silencer underside, slight scratch on side fairing and a cracked indicator. How useful the bungs would be sliding along a bumpy road I dare not think. But they did the job slow speed.
Rob
P.S.
We watched the incident on CCTV to see who pushed the bike over. Nobody did! It just went from leaning on the stand to upright and then over to the right side. Spooky!!