As always it comes down to cost. It does seem the Marine Cloud idea is acceptably priced, theoretically at <$5bn year:

https://www.scientificamerican.com/article/albedo-yachts-and-marine-clouds/#:~:text=%22Although%20they%20look%20so%20science,or%20even%20the%20crafts'%20lifetimes.

if you can find good references for cost, they would be great to add to your article.

Really interesting tech!!

--dan