So I'm curious what you all in other states pay for registration fees.

Mine is as follows in WA:

Filing fee $3.00
License fee $10.50
Watercraft excise tax $119.00
License service fee $0.75
Derelict vessel/invasive species removal $6.00
Service fee $5.00

Total amount paid $144.25

I looked up the Watercraft Excise tax and it's defined as follows:
What is the watercraft excise tax?
It is a tax on the fair market value of non-commercial boats, 16 feet and over, used on Washington waters. This tax is in lieu of the property tax.

What rate do I pay?
The rate is .005 of the fair market value. There is a minimum fee of $5.00.

What are the funds used for?
Funds are distributed to the state general fund.
So that means that backing into the numbers, the supposed FMV of my boat is $23,800 (so I'm pretty glad they have my boat undervalued).

My trailer is $26.75 a year in addition to the boat fees.

What does everyone else pay?