One of the reasons they stopped using the Nürburgring was, at nearly 13 miles, the spectators only saw a car go by every now and then.
Plus it was hard to implement safety measures over such a distance.
To "see" a race at the Isle....unless you're in a helicopter....is only a matter of fleeting glimpses, yes?
The sound and fury probably accounts for much of the fun of being there?
Stig