I've been converted and also bought a harris pole. I drilled a hole and used coarse emery paper to file out the hole, so it didn't slice the pvc tubing.
At the bottom, I drilled straight up and kept swiveling the drill to make a larger hole, so the hose can slip through easily without snagging.
I also fitted some fan jets today. I fitted them next to the pencil jets so that I can choose either as and when!