I recall a guy who aparently flew with the precision of a Swiss watch from day one went solo in about 7 or 8 hrs. He was certainly an exception though, almost "robotic" as his instructor referred to him. He also went onto Aviation Corps flying Blackhawks.
Oh come on guys!
Don't fall for the bull!!!! that is dished up by some training organisations these days.
Just happen to have log book #1 beside me:
28 Nov 1973, Gill Layt sent me solo at YBAF in C150 VH-DTE
7.5 hrs TT
That was regarded as "good going" but nothing exceptional. Plenty have soloed in less time.
Maybe too many hours are spent taxying these days!
However, it not about hours - its about when you are ready!
Dr