Recommend you contac the CA DOJ and a lawyer for the current legal answer.
Depends on what it is. The California Dept of Justice website has information.
No. It is not required to register or operate the vessel in California. It is required by most Marinas if you want to get a slip.
No.
You are not required to register your shotgun. In fact the California Attorney General says: "California law does not require persons moving into California report rifles or shotguns. One important thing to be aware of though is that certain rifles and shotguns may be defined as 'assault weapons' in California and are prohibited from entering this state under most normal circumstances. Additionally, machine guns and ammunition feeding devices with the capacity to accept greater that 10 rounds may not be transported into California." http://ag.ca.gov/firearms/ab991.php --- this link takes you to it. If you do have a handgun you are required to register it within 60 days.
You will pay the tax when you register the vehicle in your name.
Ask your local police.
No. The only times you're required to are when it's an NFA regulated Class II or Class III item, such as short barreled or full auto rifles.
no
yes----
Contact your local police to see if there is even a requirment.
Yes, you are required to pay any outstanding late registration fees in California before you can register your vehicle in Florida. The California Department of Motor Vehicles (DMV) must clear any registration issues, including fees, for you to obtain a title and register the vehicle in another state. It's advisable to resolve any fees or registration issues with California to avoid complications during the registration process in Florida.
No. PA does not require gun registration- and the SKS is not an assault rifle- it is a semi auto rifle with a fixed magazine.