I used Safeco for the trailer. Partly because I was insuring based on an appraisal by Polk, its a vintage trailer, and a time constraint to get on the road. I used FCIS Insurance out of Iowa. I had seen them mentioned a number of times in the forum and decided to give them a try.
I was comfortable doing this by phone and email as I spent several decades in the insurance industry.
I'm in the process of moving my other policies to Safeco also. I have an old friend who took over his father's independent agency. Did this based on the quotes I got, not due to any dealings with FCIS. Haven't talked to them in months (thankfully no accidents