Gordon, when I bought my 330 Sundancer years ago it had a manual Sea Wise system on it and we loved it. It was easy to crank up the dinghy (10' Zodiac with 9.9 Merc 4-stroke) and it stowed securely in the raised position.
Now I have a larger boat and a Boston Whaler dinghy that is too heavy for the Sea Wise system, so guess what--my Sea Wise is for sale!
It's off the boat, sitting in a plastic tub in my garage. If you are interested, PM me and we'll talk.
Mike and Tina
Beachcomber 1995 Sea Ray 550 Sedan Bridge