Two years on the old 1-10 system. At the time, the rink aligned learn-to-skate course dates with school half-terms, so school holidays created gaps and slowed progress. This was just doing the 30-min class and averaging another hour a week. Had to repeat a couple of levels to pass, but might have completed it a few months sooner without the breaks going by how soon daughter#2 managed it. Started at age 41.
Only skated maybe a dozen times in my life before then, and not for 20 years previously. Did a lot of martial arts in late teens/early twenties which has left a legacy of decent flexibility, posture and core strength. Have always been moderately to pretty active with the usual suspects of activities for general fitness down the years.
I think any activity where you need to be most aware of your body position above all else starts to give you the tools to approach skating with the kind of approach that will allow you to adapt.
Getting to the end of LTS is only an artificial line in the sand and gives you a decent range of movements well enough to then start working on them properly. Take 3-turns. Got through them on LTS after a bit of a struggle. Then they were a bit better for passport but still pretty much a tiny glide and a turn on the spot. Then had to really try for FM2, needing some proper speed and a longer glide into and out of the turn. Sort of left them behind for a while, so they've got slack, and found myself really having to concentrate and work when I did several sets in a class the other day to make them really progressive again.
If there was ever anything I've encountered where persistence and effort trump initial ability, it's this. OK - I've seen people with very little ability make little progress despite a lot of effort, but as soon as you have just some ability, focused, regular and persistent practice reaps dividends. It's as if you multiple your ability by your effort.[/size]
I've previously struggled immensely with, in chronological order, forward crossovers, backwards crossrolls and one-foot slalom. Now a saying I heard about what's difficult today will be part of your warmup tomorrow applies. So there's hope for those elements and field moves I'm struggling with.
And never measure yourself against children. They can go from complete beginner to age-group national champion in five years.