I usually take my glove off so he can clearly see me whipping him the finger. Just kidding, I do the same as others, pull to the side and wait for him to pass or wave us by.
I do have one complaint, honestly, the trails are too smooth. I miss the days of good ole whooped up turns you could hammer through. It's been about 8 years since I've been into riding and the growth of the sport along with better equipment has lead to the clubs and groomers doing a great job on the trails, kudos to you guys. The problem is with all the technology on sleds and all the bump capabilities, it's hard to get to use that side of the sled. When I come around a turn and see the groomer, I kinda get depressed. I don't want flat freeway driving, I had 5 hours of that driving up there.
With that said, you guys do a good job of grooming and I know the majority of people don't feel like me and though I like it rough, I appreciate your long late hours of work. Thanks.