I purchased the set of ten a few weeks ago. I widened the channel the first time I used them to familiarize the dogs with them. The dogs adjusted to them more easily than earlier (saggy) versions. I saw a similar product on the One Mind Dog site and searched for them after that. To help the dogs I used six poles and double wires and now am reducing the number of wires. I have also seen this style of wires only attached to one pole, because they are fairly rigid that is a possible adjustment once the dogs need less help. This is the third set of weave wires I have purchased and the first set I don't regret buying.