Sounds like I've really missed out on the exciting discussion elsewhere regarding the new rules on race numbers...
I often fold one half of my number over but make sure the sponsor is visible once. Also pin on after I've got my bum-bag on so it's not obscured and comfy (and I scrunch it).

Anyway, enough of such fun stuff! Many thanks to the organiser, marshalls etc. for an enjoyable day. I try and say thanks as I go but was pretty head-down from Swirl Howe onwards