The way I read it, if l am traveling around New England and only in Maine for <75 days for the first year of ownership, no tax? Is it a one time fee?
No, that's annual excise tax which is different.
Use Tax is a one time payment.
There are two separate issues on the Use Tax. One is whether people owe it or not. The other is enforcement. The CRU has been just shotgunning letters to any non sale tax state registered boat that they can prove was in Maine for even a day requiring the owner to prove that it wasn't in the state for 30 days during the first year of ownership. They have also failed to make the first year of ownership part clear in the letters and asked for documentation of boat's location during the entire ownership period. This, under threat of liens, has caused more bad feeling than the tax itself. It's sort of like you visit a state park in another state and arrive home to find a letter requiring you to prove that you didn't use drugs while visiting the state. It makes you really want to never go back again.