You might want to consider the Nacra F17. It sails well with 2 people, with or without the optional jib kit, but is raced single-handed without a jib. I think it is probably more durable than the F16, is a foot and a half longer and weighs about 320 lbs. Based on your statements, it seems a better choice.

The attachment is a picture of several F17s on the beach.