I've used an Aquair 100 by ampair
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and a friend used the one on a pole where you stick the end of th epole in the water off the transom.

Aquair was great and by far the best bit of kit I've bought for cruising, it can be deployed quickly so you can use it for coastal trips of a few hours. We had more power than we needed to run fridge, lights, computer, nav gear radio etc. I also think that when it got a bit rough it steadied the stern as the loads are quite huge. You have to be a little careful deploying and retrieving but you get better with practice. From friends comments I didn't think the pole one was as effective.

The Aquair as a wind generator was also great in the Carib, we hoisted it above the boom off the back stay (as the electrical plug was on the transom) so it was above our aft cabin hatches which were open and it was not noisy even in 25knts.

A very good product and with very good support (I blew up the voltage controller) It's sat in the garage waiting for the next trip or delivery.

We never had to run the engine and had no solar panels or other means of generation and the fridge ran full time for over a year.