Larry Yatch, a SEAL and firearm instructor, introduced the C-clamp grip. Larry had to get new shooters gripping the gun with isolated trigger control at his firearm training studio and developed a "C-clamp".
The "C clamp" way of engaging the gun to be much more effective and definitely worth a try. Having a way to grip the gun which does not require a specific amount gripping force allows much more diverse grip. Meaning, you can grip firm or soft. For that matter, you can grip as hard as you possibly can and still have your trigger finger operate independent from your lower three gripping fingers of your strong hand.