Hey Kris, I guess sarcasm doesn't come through in this medium. I was just poking fun at the situation since I essentially got raked over the coals for a post with a similar sentiment.
that being said, in all seriousness, the sentence in bold hits home. At this point, it's not even just about development, my kid is kind of depressed right now. He's never had this much time with no ice and it's really getting to him. Skating, just skating, let alone the other stuff is his release and he doesn't have that right now.
With regard to your second paragraph, you don't have to justify your position to me. My motives have never been about getting my kid to the NHL, just about giving him the best opportunities to pursue something that makes him happy as far as that takes him (actually both kids, but my son is more passionate about hockey than my daughter, but she's AAA too). I would probably do it if he was a house player. So, you're preaching to the choir. That being said, we intentionally avoided AAA at that age to keep ti fun as long as possible without the stresses that come along with SOME AAAs. That is certainly a personal decision though and if he's made AAA at that age and is having fun, then roll with it (sorry you have to deal with the politics though π My daughter forced us into it by making us go that route now for 12U.
Now to your question.... that's a tricky one. At that age, I think good synthetic can be ok. My kids both spent a fair bit of time on it at that age (not ours, sorry, there are limits to my funds) and the time probably helped their development. That being said, if it's about doing things at home, I honestly think inlines would be better. Here are a couple thoughts as to why...
1) My main objective is always about keeping it fun, especially at that age. Being outside in the off season, messing around with friends (or Dad) while playing hockey has a higher fun coefficient than being in the basement on fake ice.
2) Although I commented on keeping the hcokey specific skills as sharp as possible, again at 10, it's a slightly different story to me. There are a lot of really really good hockey players who played roller growing up. In fact, one of my good friends just rollerskated until he was a freshman in high school where he tried out for his high school ice team and ended up going to ice and ultimately AAA and juniors/college. Roller players always seem to have fantastic hands (he does) and it teaches different skating skills than ice (e.g. mohawks and continued movement as oppposed to stops/starts). There are lots of observations that are just that, observations, not hard data. Anyway, at 10, I think developing more diverse abilities is still important. The "bad habits" that come from roller are actually broader development skills which contribute to greater tools to call on later when on ice.
3) Getting back to 1) putting in 2 hr in the driveway with friends will develop skills (hands and skating) more than 30 - 60 min doing more specific things in the basement. To USA Hockey's ADM point, the former would be akin spending hours on the pond, which kids don't do any more. It would develop vision, creativity etc etc etc......
Anyway, if I had unlimited funds, I'd probably do both. If I'm debating between synthetic in the basement and good inlines for the driveway, I'd probably go with inlines to keep it fun and develop more things than just very specific skating/on-ice skills.
That's my $0.02, I guess.
Good luck and enjoy the journey.