Ferdz

I am not sure that you convey the basically very sound idea about beeing loose = not too tight = not cramped the right wqay here.

To have the fifth finger halfway is a good idea generally – but the pro’s – as you can see have a good/firm grip aournd the handle, they really grasp the handle as they go into the service motion. The clue is: that the grip is firm, but the *wrist and arm* is loose/flexible, can go into the big loose swing.

You can see this – Rodick, Federer, Bartoli, Sharapova, Nadal – they all lock the fingers around the handle, but the wrist+arm is loose.

The spin comes naturally as the left arm gets up, knees beend and you – like a panther before the attacking jump on the prey – focus the ball, builds the dynamic tension and so swing up the rackert. The best point in your service lessons – and that few others have is the big loose swing. Look at fuzzyyellowballs how loose wrist+arm Federer have when he practices serve!

A loose grip – no that’s not the key here, rather firm grip – not before starting the serv.mot.

I think also you should stress the small jump and full body strech – a natural consequence of the loose swing.

All the best
Anders, Norway (55 years – started playing tennis four years ago – and have learned a lot from Internetbased tennisinstruction)