Steve, <br> <br>I sail a 2000 Marstrom A cat. I weigh 250 pounds. So far no problems with the boat burying a hull, or having difficulty carrying my weight. I decided on the marstrom because it has fuller hulls, and is considered the best platform for bigger sailors. You at 155 + 7 yrs old daughter shouldnt be a problem for a Marstrom. <br> <br>Mike Parsons<br><br>