For many years we have had a (Rutland 913) wind turbine and a 100w solar panel. In that time, my experience as follows:
Noisy, not a problem during the day but too noisy to leave running during the night (it was above our bed. Tried various methods of trying to make it quieter - nothing worked. In the end, bought a new controller from Rutland which allowed you to switch it off (which in effect applied a brake) - this saved having to lower it every night. Don’t worry about the noise for other boats - no real noise outside, it is inside where you hear it.
we are just holiday boaters (and cruised most days when on the boat, so this was really just a top-up rather than main charge), so no real experience of performance during the winter, but otherwise the solar panel always outperformed the turbine - we found you need a howling gale to get more than a couple of amps....
ruined the paint - the turbine was left down most of the time (shoreline when in the marina) and this eventually resulted in a large rust patch
dont fit under all bridges - adapted ours so that you could easily remove the ‘fin’. While few and far between there are bridges that it wouldn’t fit under otherwise.
in summary, if you don’t have a turbine- in my view - dont (on the inland canals) - invest in solar instead. For next year, will be removing ours and replacing with a larger solar panel.
And just for reference, if you see a 913 doing very little in a strong wind - this can happen if the batteries are full - on ours, the controller applies an electronic brake to reduce the current, in effect stopping/slowing the fan when not needed - for a long time I thought it was faulty until I realised this!
just my thoughts..