Having eyes on is a completely different deal.
For me, it would be manditory, due to distance. As a few on here can testify, what is rust free to one person may mean a completely different thing to another.
Good example is the one I went to Sask to look at. Talked to the guy on the phone & he repeatedly said rust free. Drove 6 hours to his place & it was so rusty the seats were falling through the floor !
Need eyes on.....