gman, I use a Roadlok front rotor lock and have very good insurance.
The Roadlok works great but if 4 big guys with pipes and a truck want Your Sled they're just gonna put the pipes under the frame pick it up and put it in the truck or van and go.
I fully agree about your comments regarding "4-big guys", however there are still some additional precautions that can improve the odds. It is kinda like burglar proofing your house. You can't make your house completely burglar proof. The goal though is to make your house more difficult to burglarize than your neighbors, so they pick someplace else. Same thing for your bike.
I looked into protecting your bike after the well documented thefts at Daytona Beach. I read some articles written by reformed (or caught) bike thieves. One common comment is to use your fork lock in addition to a good disc brake lock with motion detection/siren. Research your disc brake lock before you buy! Some are easily picked.
Where you park your ride is important also. If you are out and about, park your bike where it would be difficult for it to be picked up and put on a truck or trailer. Parking in a well lit area with a camera may be helpful.
A big challenge is parking your bike overnight at a hotel/motel. I am a geek, so I also check the crime rates in the areas of the motels I stay at. In some cities the crime rates are much higher in one area versus another just a few miles away. Sometimes it is not worth saving a few bucks on the hotel. Where you park in the lot helps again. Park by the front lobby if possible where there is more traffic to discourage the thieves.
I sometimes carry a heavy chain and lock that can't typically be cut with bolt cutters. Battery powered drills with metal grinders attached can cut through the chain or lock, but this takes a few minutes with a hardened chain (there are demonstrations on YouTube). The chain and lock weigh 20-lbs, so this is a consideration also. The challenge is what do you lock your bike on? Can that be cut? If you are traveling with someone, you can lock your bikes together.
My brother bought a wireless motion detector that sends a signal to a FOB. The question I have is do you want to run out to the parking lot with these 4-big guys, just to bring them your FOB and keys
The real protection as previously mentioned is insurance. It is just I hate to ride a long distance only to have my bike stolen. That would be a major "buzz-kill" at a rally or bike week.
Best Motorcycle Security Chains Review 2019
• Kryptonite New York Legend Chain
• Kryptonite New York “Fahgettaboudit” Chain
• OnGuard 8016(L) Beast Chain
• Kryptonite New York Chain
• Abus GRANIT Extreme Plus 59
Lock Cutting Example:
Gorilla Cycle Alarms - Quality Motorcycle Alarms