Re: Roll dampers

Gualtier Malde wrote:
> We have a 34' CHB trawler which is vulnerable to waves and wakes when at

> anchor.  For some time we have used Davis "rocker stoppers", 4 to a 
> side, with good results.  Once we were less that 200 yards from a BC 
> Ferry route (from Schwartz Bay) and rocked like crazy until we got them 
> down and then all was peaceful.
> 
> At an auction over the weekend we picked up two devices which have 4 
> flaps in a square tray.  They are on 14' of line, and the louvers allow 
> water to go up, but not down.  I would like to know more about them.
> 
> Has anyone any experience with them?  I don't see a name on the units.
> 
> Thanks - Chuck

Something like what you are describing is advertised in "Lats and Ats" 
magazine as "flopper stoppers."

http://www.latsandatts.net/store/product.php?productid=16200

I Googled "flooper stopper" and got a bunch of hits.