This mount would of been a lot better if it didn't swivel so much and was easier to use. Every mount except the dolly for obvious reasons was used with and without a wheelchair.
Step 2: In Conclusion
The dolly cam is the best kind of mount to use if you don't need to go down or up levels because it is the smoothest but it can't be moved without shaking quite a lot. otherwise you should use a weighted camera mount like the one shown as it is the least shakiest of the 3 other camera mounts and was the easiest to use.