If I may, I think Fisher was somewhat lazy in their design of the Fisher 11. Rather than designing something from a clean sheet of paper they chose to just downsize a 10. Had Fisher instead chosen to start from a clean sheet, the end product would almost certinly not have ended up as inherently compromised and inflexible as the 11.
As I see it the 11 has two major problems, one is that the arm is very poor, it is weak and instable. The other is that the chassis is unable to shrink as small with as many options as the Pee-Wee.
"And if you want more stability but not on a track, you turn all 4 wheels in reverse on the Fisher: that gives you about 4 more inches wider footprint."
Factually incorrect. Reversing the wheels on the 11 turns them under the chassis. Default is track width.
