I use one but sometimes it's quicker just to nip up the ladder.Did one at the w/e and guy left garage unlocked for power as he could not be there.Ladder off first and quick check all round, one great lump lifted from one corner and I was done, it was totally clear.
Wont get sods out that are trapped under tiles/wires or jammed under flashing.[/quotedoes if you break them up first .