This will be a very big seller. I know this is a tight niche market, but there really is no valuable guide online to Ice Fishing.
I think the best way to profit from this niche would be as follows.Create a lead generating ebook and sell it for under $50.
Create a membership site and charge $19.95.
Create a DVD series and sell it for anywhere from $197 to $397
You could even branch out into subjects like "How to make money with your love of Ice Fishing"
You can find a whole bunch of really great free content that you can write into your own words on Ice Fishing by typing "Ice Fishing FAQ" into Google.com.