hi every1 im fairly new to plastering and would like some opinions please. when rendering i lay up a scatch coat and the following day ill lay up the second coat straighten it off with a darby and float it inn when its time. i see the big long 4ft floats on the market. what do u lot think of them ? do u use them instead of a normal float to save time? i work with an old school plasterer so he knows nothing about this and isnt keen to learn. could any1 advise me please