Yes, Marty, you are right, and that is usually the obviously right thing to do. It would probably be best in the Island, with complex and long sections, to have two marshalls working as a team, one looking each way.
Its ironic that in a branch of our sport where there are far more built in dangers, and accidents can be more complex, and lead to other accidents, there are less marshalls per square foot than on relatively safer short circuits. However, there simply are not enough people to marshall to that level.
I still think something should be done to help off Island marshalls with their costs to get there (I know several who come all the way from Germany, and spend all of the TT fortnight dedicatedly marshalling, at great financial cost to themselves.)and perhaps some kind of Big Night Out for the local ones (or a slap up lunch paid for by the ACU......)
Many marshalls, on and off the Island, train, travel and work all their weekends in the racing season so that we can have our enjoyment as riders or spectators. Just like the riders they sometimes make disastrous mistakes. They are human, and it happens. I have the highest possible respect for them, and thank them from the bottom of my heart for the wonderful work they do.