I was going to chat with Paul on the phone but he's not called
...so as there is a lot of interest on this, I'll share what I know:
Boot sale advertising & demo will attract punters from the council house end of the domestic market. They are mainly price sensitive, will expect low prices and want something for nothing. make sure you anchor everything down so it doesn't walk and have someone with you.
To work at advertising & marketing through demo's at the middle to upper end of the domestic market needs a little forward planning.
Look for village fairs that are taking bookings for stallholders. Book at stall (usually 1 or 2 days). Put a poster up in the local shop with your name and photograph and basic list of services. When the local people see you at the fair, they will think,"I know that name/ face from somewhere", and you are already familiar and therefore half way there! This type of venue will attract local people who will be able to offer referal and recommendation over a period of time.
One step up from this is the Country Fair. Usually a county event and they last about three days. Prices for stalls here are expensive but the geographical location of the visitors will be big and they will be from all domestic markets and incomes.
It is possible with the correct demo etc. to fill a month in the diary in a morning.
To be successful in any of these areas but especially the last two, you will need to be smart, have enough material to last the duration of the fair, have answers to questions, confidence and a charming personality.
If you can do it...GO FOR IT. I wish you all the luck.
Nicky
PS I've never done this kind of marketing personally...much to scary!!