Folding fan rakes with the thin sheet steel tines work pretty well. You need to play about with tine spacing to get best results. Fixed sheet tine and wire tine ones are invariably too widely spaced. I got mine from LiDL several years back.
Dennis types faster, looks like the amount of spring in the tines is important too. Mine is fairly low force spring and doesn't scarify to any degree but still collects things well. My wire one is much heavier sprung and really wants to scarify.
Clive.
Edited By Clive Foster on 24/09/2017 15:50:09
Edited By Clive Foster on 24/09/2017 15:50:25