Having just visited the Nine Maidens today I would advise not going after rain! The field was more water than earth.
Could I make a request...Please do not make for the stones by hopping over the hedge by the lay by. You will notice that some new fencing has been erected to stop this but people have obviously decided to go around this. If you walk down the road a short distance there is a nice new stile beside a gate leading into the field. You can then follow the official track across the field to the opposit side where the stones are.
Sadly today was not the best day to take photos..very gray cloudy day...until I got home and as I sit here now the sun is out and there is hardly a cloud in the sky...