Whirly
I remember post PPL (not long) a kindly FI saving my bacon.
It was a glorious day at Southend and the weather was forceast to close in (fog) at lunchtime ...... I tunred up bright and early to pre flight and the said FI gently pointed out that all the other airfields in the SE/midlands were socked in.
So, he said, if the weather develops more quickly than forecast your nearest guaranteed divert is Manchester. Are you up for such a long flight at your level of experience?
The answer was no.
Guess what, 75 mins later advection fog had formed and I was drinking a cup of tea in the clubhouse, rather than planning a 120NM divert on the hoof.
RIP Danny Wolff, a great teacher and a gentleman.