And when does the technical improvement cease, giving way to age cutting into strength and balance and reflex speed? aaaaaaack!
(I once asked a top level masters bicycle racer that question; he just said: ride your bike; I was 35 years old at the time)
Aerobic fitness tanked at 55 yrs old ( a genetic heart weakness catching up with me I think)
I hike up steep trails about 30 percent slower than 5 years ago.
I stop mid-run a whole lot more, especially after mid-day.
I am more concerned not to sustain an injury. not necessarily slower or wimpier, but way more concious. Hell, it hurts just to get twisted up and out of position.
But, on the plus side of the age/experience equation: I'm a more disciplined skier, better technique, usually better judgement, more experience reading the snow and having a feeling for the mountain.
really, not trying to brag or pump myself up, wanting to know what you (masters skiers) are experiencing.
I know, stoke deficient in one respect, but for those totally ripping, there's your stoke.