Need Dock Insurance recommendations

I had a dock for 23+ years with no insurance: Rented it out many times, but as per the lease/contract the vessel owner was responsible for damage to the dock, not the other way around.

Doesn't the entire marina itself have liability insurance for such situations. Also keep in mind you're going to be size limited because the draft getting in to that marina is only about 4' at low tide.

Probably covered by my home owners liability insurance, but on other hand, renting the dock would be a commercial operation, not covered.
Never had a problem and my dock rent agreement specified that the boat owner
should have his own insurance.
The property was homesteaded, can't be lost in a lawsuit..
If the boat guy fell and broke his neck, he would have to prove willful negligence on my part?
(Can't do, the dock was pristine at all times numerous cleats, no lose planks, motion activated security lights and 24/7 video monitoring)

Require a certificate of insurance from the boat owner tenant for boat and liability as "additionally insured."

He owns the slip, but those slips are setup as condiminiums as far as rules and regulations go. The parking lot, main dock walk ways, ramps, etc. are all "common areas" so generally they have liability insurance as well as insurance for the damages. Imagine there's a hurricane. You have insurance and your actual dock is rebuilt, but there is now no main dock leading to YOUR dock.

On my post#10, insurance certificate should name "you" as additionally insured.
An additional insured extends liability insurance coverage beyond the named insured to include other individuals or groups. An additional insured endorsement protects the additional insured under the named insurer's policy allowing them to file a claim if sued. Your insurance company may require this, or not cover your claim when leasing to others. Doesn't sound fair but the way insurers operate today.