You people are really overanalyzing this. I have read all the posts and after reading Update 7 I posted the question to FIRST. Their answer explains everything. 3' is not a long distance, and I don't envision seeing or hearing about anyone tripping while taking one or two steps at the beginning of the human control period and you don't need to run (it
is only three feet). If everyone involved just stays calm and doesn't run, we won't have problems.
Dave
P.S. For those of you who want wearable controls, don't make it so complex that it takes 5 minutes to put on, just make it a slip on affair.