Agility practice let down

This morning Skyler and I took the dogs to what sounded like a promising place to practice agility. It's a kennel not too far away that I'd learned had a field where they had agility equipment, including an A-frame and dog walk. For only $8 a visit, or $25 a month for unlimited visits, you could practice. At home, and at the 4-H class where Skyler goes, we have jumps, weave poles and tunnels, but no contact equipment. We drove about 20 minutes to get there. On first glance the grounds looked to be in bad shape and I almost drove back home without stopping. But the agility equipment looked OK, and I knew it was a "freebie" day to introduce the place, so we signed in and went into the fenced yard.
There was a small A-frame. I tried Clover on it. She slid on the way down. The slats were too far apart, and there was no sand on it to give it traction. I was glad we hadn't put Nim on it first. I wouldn't want his first time on the A-frame to be scary. Skyler did lead Nim across the dog walk. It didn't have sand either, but I told Skyler to go slow with him. Nim walked across the walk with no problems. We took Nim on the teeter also. I held the teeter and let it fall gently at the tipping point. Nim had no problems. He didn't seem fazed by the motion at all, which surprised me. Skyler also took Nim through the closed tunnel a few times with me holding up the fabric. He did very well. After the fourth time Nim went through the tunnel, he laid down on the tunnel's fabric though. He was telling us it was too hot to keep going.
At one point I sent Clover over a jump and she went to the weave poles on her own and did them perfectly! She's such a good girl.
We'd only been there about 35 minutes, but I decided to take Nim's hint. It was warm and humid, and the dogs were very hot. Hopefully they will make the equipment safer, otherwise I won't be back.