PowerBoats i.e high-end boat ownership is a big market. The accessories market for these high-end boats is also huge. Here is a solution to capitalize on this market.

259: Motivational Sleep App

Vijay Peduru provides one million-dollar startup idea every Tuesday. 
These ideas won't help you build the next Instagram or Twitter, but would help you
create a $2K to $10K MRR(Monthly recurring revenue) business. The goal is to help you accumulate half a million to a million dollars in 3-5 years.
These ideas could be easily implemented without much tech background.