At 350 lbs, no matter what your height is, you need weight loss, not CoolSculpting. You need to drastically change your current diet and get some nutritional counseling and begin exercising daily. Other than that, your only option would be bariatric weight loss surgery. Cut out all forms of sugar and wheat and simple carbs (white potatoes, corn, soda) and stick to all natural foods of simply prepared meats and vegetables and drink water only. The weight should come off and then other measures can be considered.
Food and inactivity caused the weight gain, and the right high protein, low carbohydrate food and activity will solve it.
I suggest you be evaluated for a surgical weight loss procedure. Cool Sculpting is not intended as a weight loss treatment.
If the patient is 350 pounds then I would suggest he look into a lap band procedure for weight loss. CoolSculpting is not indicated for someone overweight. Please find an experienced surgeon. It will be a life changing surgery for your friend.