The RatchetRake will do this better and glass smooth for me with my clay base would never grow grass but grows weeds great. The lower teeth on the RR leaves slight grooves for seeds. The front teeth are bigger and are for brush control and digging. It is strapped on and is a one person off and on in under two minutes if your old and slow and under one minute if your young and fast.
The Pirinha is probably a step ahead in digging and in leaving on the bucket all the time (bolted on thru holes drilled in the side of the bucket, slow on and off) vs RR which needs to be taken off in under one minute by one person, for scooping up bucket loads of gravel, rocks, dirt, mulch, etc. I would like to have both but my only one I chose is the RR which I've had for maybe 8 years, since company started selling them. I've started to order a Pirinha for my
L3901 but pricing plus shipping encouraged me to drop off the page since I already have the RR which is indestructible and I've added the RipNDig from the same company but I bought it from a fellow TBNer used.