TT - having done some interesting run-ons teaching student instructors on EOLs- - I can tell you that when going from grass to tarmac and back to grass again (that was the runway crossing) the tarmac was definitely the grippiest on the skids
.......I think we are going lonnnnnnggggggg...
Maybe a bunker with some sand might have been useful.............engine off golf - now there's an idea
