Do you have a vehicle other than the motorcycles? The reason I ask is that you should park it right on the inside of the gate. Then the gate cannot be so easily rammed into and defeated. Leave a vehicle right on the inside of it, and it greatly improves the defense of the gate.
Also, please make sure you both stay paired up for at least the near future. Stay in pairs as a team. It doesn't have to be you and John together, but you could pair up with neighbors or other friends perhaps. Being alone right now when there's so much tension would be a bad idea.
I'm sure you guys knew that already though.
Do you have exterior cameras? It wouldn't hurt to at least have one. Then I would put up signs making sure they know they are being recorded by that camera also. Such cameras go a long way when it comes to stopping petty criminals. People act a lot nicer when they know they are being recorded.
It helps with the more violent criminals too. The reason is simple enough, but anyone meaning you real harm will cover their faces. That gives them away more quickly in the beginning. They cannot act like regular people and change rapidly once they decide to go from normal to ambush. Worst case, you have video evidence after the crime happens, but the objective is to deter them in the first place.
It's not my job to worry about your safety, but I do anyway. LOL
Another thing I would do is make sure you leave an interior light on even during the night. Make it hard for them to tell when someone is awake or not. Never let people know when everyone inside is asleep or presumed to be asleep. Even here in Virginia, I keep lights on in the main living area at night with blinds and shades closed. It makes it so criminals are never sure if someone is up or not.
Do you guys have a normal porch light? Do you have a wireless access point? Is the porch light positioned so it would cover the gate and your motorcycles at night?