The gate's bars were twisted but the locked chain could not be broken.
Mr Proctor said the windows of a bus, a motorhome, and a car were also smashed and was not sure if anything was stolen.
He said about two years ago, thieves cut a hole in the fence and drove out a car stolen from his yard and on another occasion, another vehicle was used to ram the front gate.
Additional security measures seemed pointless as thieves always found a way to break into his property, he said.
"We looked at putting CCTV cameras and I'd had discussion with police and our insurance companies and they advised me they wouldn't be able to determine who did it because they wear hoodies.
"Fences are irrelevant because they cut through them or climb on top to get in. Now I am going to sleep on site every night to catch them," he said.
Whangarei police Senior Sergeant Darren Sullivan was surprised at Mr Procter's claim CCTV cameras would not help.
"Anything by way of preventive measures helps and CCTV footage is absolutely beneficial," he said.