i have to agree with elliemay, what is your expectation if you send an email or letter? how will you feel if you send this email and he doesn't respond? or doesn't respond in the way you want?

as for other people sending letters, for me it was because there was so much i couldn't say to his face. if you feel like you expressed what you wanted to express then i don't think a letter is necessary.

i think the ziplining photo sounds nice and i do think you t would like it but i do think whether you should send it or not depends on what you want out of sending it.