I figure it was time to start a thread of motorcycle skills and coaching.

AGrip found these and suggested I pick a set up for parking lot exercises:

The Range Cones used and sold by MSF (search for "cones" in https://store.msf-usa.org) look much more durable than the ones posted above(and much more expensive).  I know from experience that the MSF ones can withstand a motorcycle running over them.  They are also fairly heavy, where as I would worry about the amazon.com ones blowing away.
I did order the ones from amazon.com, so we can see how they work for parking lot exercises.

When I was young we used those Amazon cones for soccer practice. They can survive 10 year olds running over them in cleats. Because they are low-profile they tend to be pretty resistant to wind.

We got them in the mail today.  They're much more flexible than I thought they would be.  Looks like they'll work out just fine!