Get up to date on biofouling and the pros & cons of existing and emerging solutions
Introduction
Wikipedia will give you a basic understanding of biofouling, the negative environmental and economic consequences and a rough overview of current solutions. https://en.wikipedia.org/wiki/Biofouling
Research on Biofouling
Sciencedirect from Elsevier provide an updated overview of research related to marine biofouling.
https://www.sciencedirect.com/topics/engineering/marine-biofouling
Biofouling Management Solutions
GloFouling Partnerships have put together a summary of currently available solution with pros & cons in chapter 5 of their report "BIOFOULING MANAGEMENT FOR RECREATIONAL BOATING". Although their main focus is to address the transfer of harmful aquatic species through biofouling, it provides a good overview.
Emerging Technologies
The paper "Review of Underwater Ship Hull Cleaning Technologies" reviews existing and emerging technologies, specifically within underwater robotics. https://link.springer.com/article/10.1007/s11804-020-00157-z
Leisure boat market facts
The International Council of Marine Industry Associations gather and consolidate industry relevant insights in The Recreational Boating Industry Statistics Book on https://www.icomia.org/
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Local market info is available from some of the national boating associations. For the Nordics, you can find market information on these sites.
Norway, https://norboat.no/
Sweden, https://www.sweboat.se/
Denmark, https://skibogbaad.dk/
Finland, http://www.finnboat.fi/