I keep an excel sheet with all my entry and exit dates but that's for my use.

I wouldn't dream of foisting it on a border official. More likely to generate even more enquiries than the ones I'm trying to suppress.

i'd rather the officer just got on with it and most do after a flick through a few pages and an exasperatedsighover an other officer who hasn't put the exit stamp next to the entry!

This is just a fact of life. Reduced lounge time isn't going to generate a lot of sympathy.!