dont agree mr spray. were not spraying to 8.30 and still get 2 sprays and finished by 5. thats with a nice tea break. what you need to do nick is spray your first spray on, if your on your own then 30-40m. once all rulled, clean machine. when its soft to the touch but not wet to the touch , run the spat at 90 degrees so your taking the surface off and leaving a flat but open finish, dont spat like you would on finish , the last thing you want to do is close it in. give it 10 or 15 muns then spray the walls with water and sponge, leave for 5 mins and do your first trowel using the fat . have a cuppa for 20 min and 2nd trowel,. once this second trowel is done you can set the machine up and spray and rule the next spray, you want to be aiming to do this by about 12.30. clean machine and give the first set a hard trowel. then spat the second spray and away you go. all done by 5. The more you mess with it the longe it will take to set.