System 4 Tennis Park is a patented concept dividing one tennis court into four zones, each for a simpler, more social racket sport: Cardiotennis, Touchtennis, Pickleball and Poptennis. Clients buy a license to use the concept for CHF 10,000 per site, and they choose between 3 installation options: a modular set up, a permanent court conversion or a completely new court. Three Swiss sites were built this way, yet all three eventually closed, and beyond those, the license could not be sold consistently. The business model had a gap needing to be fixed before expansion across Europe.

Two of the three former site operators were interviewed about what worked and what did not. A list of 49 potential prospects, from private clubs to city sports departments, was compiled across Switzerland, Germany, France and Spain and approached by phone, email or in person. Three of these prospects agreed to a meeting. A survey was also carried out among casual and non-players, alongside interviews with tennis coaches and active players. Every piece of feedback gathered was used to rebuild System 4's business model from the ground up.

The new business plan centers on System 4 building and owning one physical example of its own concept: a modular, removable version of the four-zone court that can be installed on top of an existing tennis court, unlike the permanent builds sold before. Instead of only selling licenses to clients who have never seen the concept in action, System 4 would rent this portable court to interested clubs, schools and municipalities for anything from a weekend event to a multi week trial, letting a buyer experience the format before purchasing it outright. Half of whatever is paid in rent counts toward the CHF 10,000 license if a purchase follows within a year, so a trial doubles as a first payment. The unit is financed by an outside investor repaid from a share of rental income rather than a bank loan, so nothing fixed is owed in a quiet month. A written operating manual and a future coach certification are also introduced, giving buyers an actual teaching method, not just four colored zones. Together, these changes finally give System 4 something it has never had: a working example of its own product that people can see, try and buy.