You will likely have to make a 911 call before you talk with an officer.
The operator will try to get as much info from you as possible. Naturally these calls are recorded.
Keep it short and watch what you say without being evasive.
For someone who lives in the boonies the call may last for 1/2 hour while waiting for first responders, don't spend all that time running your mouth. It will bite you in the backside.
If possible, I'd get someone else to call.
If you have to call, you have to be very careful, as vague as possible. There was a guy down in Miami who had to shoot his tenant. One of the things they tried to hang him with was the 911 call. They asked how long ago the guy had been shot and he said "five minutes". He obviously meant a very short time, but since he mentioned a number, the prosecution tried to say he left the guy on the floor bleeding out for five minutes before calling 911.
I would say that relying on the attitude of the cop is a bad idea. Cops know how to talk friendly to people to keep a conversation going and they are allowed to tell you just about any lie.
Sure, cops play games. What's worse is that it doesn't necessarily matter whether they're on your side or not. The cops were on Harold Fish's side, but the DA wasn't. It was an open and shut self defense case until his attacker's family started talking about what a choir boy Kuenzli was. IIRC, Fish spent 3 years in prison.