I would make sure to bring simple 10 pt. hanging devices that could be attached to an alliance partner who may not have one (or as good of one). While you're right that most tall blockers were made at competition, I would prepare my team with either the ability to make an effective one quickly or have an effective design brought with me. Some games can be played all by yourself, and others require all alliance partners to be functioning at their best. If it's to your advantage to have all of your alliance partners able to contribute as many points possible to the alliance (which could be vital to winning some of the close matches for W-L-T games, or for average scoring ranking like this year), doing anything you can to gain points for your alliance or deny your opponents points would be helpful.