I need some opinions on this boat I made an offer on. It's a 16'or 17'1987 Sea Sprite Mark IV. I'd call it a walk-thru with a large bow area. It's set up for a outboard, although the motor, controls, and steering cables are missing. The interior is gone and the floor feels spongy. The exterior, underside, oddly shaped transom, and trailer look ok. The guy wanted $1000 back in August, I offered half. He called and left me a message today. Does it sound worth $500 or should I potentionally blow the deal and offer less?