Thank you, really appreciate the response - the comment regarding contacting the league was to just highlight who I am to them, my intentions and basically have a point of contact for image submission should they request it in future. Alternatively to get some form of affilation with them, I appreciate you have the UK press pass which is a great way to distinguish yourself if ever challenged, I don't have that, but a document from the league stating yeah - we know about this photographer contact "xxx" if theres any issues. Might be enough should parents ever raise concern.
It seemed an appropriate thing to do but I take on board what you have said.
Regarding what they get out of it, in a similar description to what you do prints/file for use, I made an attempt at it before but unsuccessfully, parents would just screenshot flickr.
Obviously there's a lot more additional detail I'd need to cover, but I'm in the brainstorming phase whether I like it not.
The reason I had been doing over 18's was it was just so much simplier to set up. I do not see it offering anything back to me other than just enjoying shooting sport.
Early stages. Lot to think on.