For the best results, it is handy to have the machine at the court which is why I designed it to pack up quite small and made it easy to set up quickly. The reason for this is muscle memory can decay quickly. So if you take a swing on the TopspinPro one wants to almost try to replicate that a couple of seconds later with a real ball. Also, by having it at the court you can easily wander over and have a few ‘refresher’ swings.
Having said that, it is equally common for people to practise with it at home a couple of times a day for just a few minutes at a time. This then often locks in enough muscle memory for it to be ‘triggered’ later when one is at the courts without needing the TopspinPro there.