Perspective: I'm a former jr. high coach whose son graduated from HS last month after a 6-year football career that saw him get all-district lineman honors last Fall. Also, yesterday was the first Fathers' Day since I reached the age my own Dad was when he died back when I was 15.
--as already mentioned, make sure he wants to play, not just that you want him to play; football demands far too high a price to force one to do it who doesn't really want to do it; not playing football does not make one a morally inferior person! (not liking to watch football, now there's another thing altogether...:biggrin2: ). One of the more pathetic things going on around here is the 40-year-old dad whose baseball career "ended too early" and who is re-living through his son and thus who defines his very existence through his son's success or lack thereof on the baseball diamond. The 7-8 year old baseball diamond. I love to go watch little league baseball games, but have ceased doing so because of the parents. (I figure it's either stop going or get into fights as I tell dads to get a freaking grip...) Pitiful. (I didn't hear this re-living in your question at all...consider it a general caution to sports dads everywhere)
--definitely "put a football in his hands" early; however, that's
entirely different from "put him in pads & start full-contact with him." Play lots of catch, teach him patterns, teach him techniques if you know them, organize back-yard games, take him to jr high/HS/college games, take him to local jr high/HS/college practices as you're able & as he's interested, take him to kids' no-pads camps as a young'un, etc.;
--I recommend organized non-pads football pretty early. If for no other reason than learning to be coachable and learning that it's a team thing.
--personallly, I
do not recommend pads early; I'd say 5th-6th grade at the earliest, and I'm frankly skeptical about that. Jr. high is fine. This advice was given to me when my son was about 7 by a guy who at the time played on schollie at USM. He didn't strap on a helmet--nor lift a weight!--until 9th grade, & earned a schollie & played D Line back when USM's defense was pretty tough. There was very little noticeable long-term difference between my jr. high guys that played peewee & my guys that didn't. Sure, there was a difference on day 1 in game understanding & maybe in some techniques...maybe. But by about day 3-4 those differences were negligible if they still existed at all. (much to the chagrin of those who played football from grades 1 - 6...they tended to get hacked that a guy who didn't know which end of the helmet to look through on day one caught up with them so early.)
--definitely involve your little ones in sports. Multiple sports. But for heaven's sake, let it be fun!! That is the element that is missing in local kids' sports around here. By age 8, it's all about post-season play, all-stars, travelling teams, etc. And those kids frequently burn out & cease enjoying their sport(s) by about 11th grade. A friend was commenting that these kids around here have never played a pickup baseball game where you had to share your glove with your counterpart on the other team, and where right field was closed due to not enough people showing up that day. Think of it this way: 35 years from now, there's pretty much no chance that yours will still be playing football or basketball or baseball. There's pretty much 100% chance that he'll still need to be able to read, write, do math, and think. And I'll
guarantee you that 35 years from now, he'll still remember childhood...for good or ill! So don't make him into a Todd Marinovich. (Note: I didn't hear that at all in your question either; another general caution to all sports-minded dads)
OK, way too long. But (obviously) your question touched a nerve of mine. Sorry for the tirade! My son decided he wanted to play when in 6th grade I took him to a game by the jr. high team he would eventually play for. He said "Dad, I'm as big as some of those guys!" And thus began a wonderful 6-year football career that he enjoyed immensely, culminating in the all-district thing this past season. (Yeah, I enjoyed it immensely myself!

)I'm glad he played surely, as is he, but I'm sooooooo much more glad that as he moves out of my house this fall, he has memories of me--and of life in general--
other than sports. As hard as it is for a sports fanatic like myself to remember, there are actually other things in life that sports that I need to teach my kids...Of course, I forget what those things are just now...
exiled