I am willing to listen anyone with good informations from betting world, especially from tennis. I have good options to stake money in plenty local shops without moving odds on Bet365 even an inch.
PM if you got smthing to offer!
if you really have access to such bookie that doesn't move the lines then there are plenty of options for you
you can check betrush and blogabet , they have tons of good tipsters with roi over 15% but the catch is that the odds usually instantly drop few seconds after they release their plays
you will do great with them only if your bookie doesn't move the lines , or at least they take like 5 minutes or so to move their lines