After giving it some thought , I have decided it is the rear wheel that needs most attention when locking up. Two people can easily pick up the front of a scooter and just drag it to their truck. The rear wheel will turn or roll without any problem (cvt) . It would make it much more difficult if rear wheel would not roll. It will also be easy to forget it is locked and drive off and damage something. Maybe a Club 493 would do the job. About $55 on line.
If thieves just realized how useless a scooter is without a title they would not waste their time. Who is going to buy used scooter parts or even waste their time driving to get them. Or worse , how dumb to buy a scooter without a title. So remember that when looking for scooter parts. Don't create a market for used parts.