Sorry, but there's no smart sense in complaining about a cop, who, only came down due to numerous and repeated calls from, whether you like it or not, a fellow citizen with the same rights, and didn't impound your trike or anything.
If you called about people, they'd come the same way, it's their job, and it's a darn good thing they are a call away sometimes.
There's a saying around here, "You'll complain every chance you get about the Police, until you need em."
You got lucky, try and DRIVE down and talk to the land owner, if he says that you have permission, get it in writing with his signature, and keep that in your wallet. If not, don't try your luck a second time.
I'd be pissed too if tons of people were riding on my land without my permission, if someone gets killed on your land, you can be sued (IIRC), for not having the land closed off to trespassing.
If the guy is just mental, it still won't hurt to ask his permission, very nice and politely.
This is my trike. There are many like it but this one is mine. My trike is my best friend, and it is my life. I must master it as I must master myself. My trike without me is useless. Without my trike, I am useless. I must ride my trike true. My trike and I know that what counts is not the amount of miles we ride, but the time we ride together. My trike is human in it's own ways, therefore I will learn it as my brother. I will learn it's weaknesses, it's strengths, it's parts, and it's soul.