One way I've seen work well is to have a big table with all the stuff on it, arranged in lots (with the lot number obvious), and a pile of printed sheets (could be one per lot, could be just all the same) with columns for lot/bidder name/bidder contact details/bid amount.
Have it all out over the three days for people to write their bids on, then close the bids at a set point and shout for/ring up the winning bidder for each lot. At least then for the lower-value stuff it's not so time-consuming doing it all in live auction format.
Obviously more 'special' lots get done live by Markie, but if my stash is anything to go by there'll be quite a few £5 items which will take ages to sort out. Maybe limit bids to multiples of £5 (or £1) so you're not spending ages faffing about with small change.
Also my vote would be for auctioning on the Saturday (lunchtime?), then people who are only there for the day can be 'encouraged' to join in
Stone
) Blank ruled pages.
