I've been wearing a full-length 3mm Henderson wet suit. I'm kinda short-legged to start out with and I had a few inches taken out at the ankles by a seamstress after I first started using it. This sewing is falling apart. Now I want to cut it off so as to expose my sholders and arms and maybe above the knees to get rid of the skid pads covering the knee caps. If I just cut it off with scissors will the thing start unraveling or will it stay put? All my diving will be in tropical waters of around 75-85 degrees so warmth isn't a problem. No, I don't want to buy another shorty.