For anyone who is annoyed by unintentional club changes but doesn't want to disable the functionality entirely, I highly recommend the Logitech M705 Marathon Wireless mouse, which I've used for many years.
Its scroll wheel has two modes, and there's a button which lets you toggle between them easily. In the mode I use for WGT, it takes a bit of effort to turn the wheel, and there's a very tactile bump to each step of rotation. Because of that, I'm unlikely to accidentally change clubs, and will clearly feel it if I do.
(In the other mode, the wheel has almost no friction, and it's possible to scroll extremely quickly through long pages: I have the mouse in that mode 99% of the time.)