Also explain to your customer that a kilt is not like pants. You can spin them around on your body. When you want to do the right strap, spin the kilt so that the buckle is where you need it. Then spin it around again for the left strap. I have a customer who does not have the use of his left hand and was worried about doing up the left strap. Once I showed him how to spin his kilt he had no problem doing all the straps single handed.