I had Philip come and show me how to do it last year, so I now plan to clip some if not all of my 'fleece sheep' myself, at my own pace.

Two tips - one is that on his own hand shears, Philip has fashioned a handle to keep the shears in position on his hand, greatly reducing the amount of work the hand has to do. (BH had a borrow of these shears and found them very comfortable to use; they were too big for me.)
Second tip is to keep one set of shears for clipping clean fleece and have a completely separate set for dagging. If you read the packs in the Agri merchant it will explain all about which set is good for which job. Not to mention that once a pair has been used on dungy cruddy fleece, it will be blunt and not cut cleanly.
Oh, to be thinking about over-warm sheep... sigh.