No, I didn't win the lotto but have had a hankering to custom build a displacement/semi-displacement motor yacht with an internal stabilization system. Our Pacific Northwest coast can be rife with logging debris and other water borne dangers for exterior vanes. Similarly, our ambitions extend to the Caribbean where seaweed (Sargasso) can be problematic. In the design stage is a steel hull with aluminium topsides, no gross displacement/weight, to date...just not light weight nor a speedster...but in the 65' to 74' LOA, to be commanded (comfortably) by a knowledgeable owner and well skilled wife (both in our 60's with both sail and power backgrounds). I don't necessarily wish to fill these pages if a Thread already exists, dealing with detailed pros and cons relative to gyro stabilizers but do ask if there are any informative publications, papers, opinions, etc. by authors unbiased by a manufacturer that can be gleaned on the internet? Naturally, I will also welcome direction to an existing Thread and comments from the forum. Cheers, Richard.