The 25 # Manson Boss with 50 feet of chain is the set up, we have used on our last three extended SE Alaska cruises with the majority of nights & many different times during the days using the anchor. Our spare is a 15# Manson Supreme & for a CD22 a very good all around anchor. The 25# Boss is definitely overkill & not necessarily needed, but when well set in a good bottom, I’m normally comfortable with a 3 to 1 scope & seldom do checks during the night, while sleeping soundly.
Before purchasing & installing a Windless, we used a 22# Claw with 25 feet of chain for the 5 previous SE Alaska cruises. It worked well overall, but in my experience much harder to set & hold in the different SE Alaska bottoms with not even being close to the ability of either the Manson Surpreme, Boss or I think the other later types similar.
Jay