It is very easy to have a boat registration transferred from Colorado to Louisiana.
It is also very easy to register a boat in Colorado. You need not live in Colorado, you only need to intend to use your boat in Colorado the year it is registered. If your plans change, you should probably transfer the registration to the state where you end up using the boat.
http://www.parks.state.co.us/SiteCol...gForm11-09.pdf
This suggests a possible strategy of registering a boat in Colorado, per the form above, and then transferring the boat registration to Louisiana.