Just a small tip since i know now you are my age ? i have a shooting stick seat . you know the type with the handle that opens out to sit on . on a long course ( even longer if you have to listen to the piemans excuses ) it does help to take the weight of your feet when there are three to a lane . not expensive off flea bay ??? HOLLY
PS you will recognise me as i carry a large bum bag around my shoulders . not as pieman put it ? " a bum with a bag "