You shouldn't let them go that far! You should get to know them before you try anything!
far too little
That depends on if you are in good shape or not.
100 ft
As far as I know, a person can still live with a single ventricle. I had heard this from my classmates before.
There are already far too many who think that they are.
100 yards
As far as I know no.
You should just ask them and be honest.
It should be full of opportunities, see if you can seize it
The threshold varies by State.
It all depends on the person. There is no "should" amount of how far someone should be able to row.
maybe 2 months before