Sales Taxes - Proof of being out of state??

[Dan1]

I almost regret starting this tread since I have already read a couple dealing with sales tax and it is obvious that it is unaminous "We all hate taxes and we really hate tax men!"

Anyway here is Situation:
I live in Missouri.
I want to by a boat in Florida
I can keep it anywhere (ie. Albama, Mississippi, LA, Tx, etc.)
Will use it only part time for two years then use it more often when retired.

Here is the question:
What is the cheapest way to buy the boat to minimize my tax liability?
IE. BUy boat and take it Some place and then return - if so where - and how do you prove I was there for X amount of days?

Or - Just bite the bullet and pay the almost $14K in taxes!!!!!