>>713341237
i have similarly large hands and have preferred palm grip in the past. i must have tried like 7 different mice a few years ago, and i finally ended up getting a razer viper and changing my grip for it. pic related is how i grip it.

i basically lay my hand entirely on top of it and hold on to it with a mix of knuckle, palm and fingers. i also got an adjustable desk and i keep it quite low to make it more ergonomic. it works very well for me personally