Topic: Lawnrake question

[Squash64]

My son has just moved house and inherited two lawns which are full of dead grass and moss.  If he used something like a Flymo lawnrake on them now, how long would it take for them to get back to normal?  Would the end of August be unrealistic? 

[Barnowl]

Judging by the reviews of the Flymo Lawnrake it would break down before the job was finished.....

[Baccy Man]

Las time I dealt with a lawn like that I used a wolf scarifying rake to clear the moss & thatch (surprising how much there was, I filled 3 FIBCs with moss & it was a fairly small lawn), did a bit of spot weeding to remove dandelions, docks etc... then aerated it using a garden fork & spread a 1/2" thick layer of sifted compost over it.
Within a week it began to go green again, 2-3 months later it was very densely growing grass & looked like a healthy lawn.