OP, you simply don't seem to understand insurance fraud, (hence you mention "changing addresses and shiit"), yes these are forms of insurance fraud, so is what your suggesting you don't actually think ANY insurance investigator is going to simply accept your word that your dad rides 60% of the time do you?
Let me educate you a little, I was a police officer, after I left that, I worked as a Private Investigator doing insurance fraud investigations. If you submit that is thought to be arising from fraudulent claims, The investigator may choose to talk to your co workers, (how often does "joe" ride his bike to work, your dads co workers, how often does "peter" ride his bike to work? Now if your dads co workers say "he has a bike" then your co workers say everyday. Bam they have you. They may also talk to your neighbors, same type of questions who rides the bike more often
Now let me explain what happens next, the insurer "may" elect to lay fraud charges. But they WILL, deny any claims made, Injuries don't get treatment, bike doesn't get fixed etc etc. If another party was hit their insurer will pay for their damages and treatments then they WILL come after you, and your dad, for the costs. this means they will put liens on vehicles houses properties owned etc. Lastly, they WILL drop you, and your dad, and if your dad has his car, house etc, insured with another company they WILL also advise that insurer of the fraud, meaning that company will also drop your dads coverage. You and your dad will have NO option but to get facility insurance normally at about 2 - 5 TIMES what your currently paying.
So if you decide to go the fraud route that is your choice just be aware of the implications down the road. (no one thinks they will get caught or in an accident and be denied).
As for the only riding in your nieghborhood. Doesn't matter if there is no one ever on that road, (I am guessing all your neighbors walk to and from their houses and no one owns a vehicle)? lol But that part is moot if it is a public road, Even a road in a gated community is a public road. Doesn't matter if your 5 km from your house or 25' if your on the road you ARE riding without insurance.
Not criticizing your opinions just point out factually they are incorrect.