thanks for the replys,
im tempted to make a |_| shaped base from railway sleepers and bolt the thing on top of them,gives a bit of air venting from the front,but the downside would be when its blowing a gale would the wind get under the front and cause problems-it can get a bit 'breezy' out in my yard,and it has to go in in only one direction due to space constrants (its a shared yard)?
ironicaly,matey gave me the quote today to build the original 'lean to' i had planned,and if i included the sleepers into the cover idea,the costs are about the same.
nothings ever easy is it ?!!