BOOSTER WIZARD ! Last update on my set up. The power strap is a well known accessory on the ski boot tech, now on my wiz, it feel like a new boot! :
TECNICA BOOSTER STRAP (TRIPLE STRAP-TRIPLE STITCH) | en | Blizzard-Tecnica USA
Tech Tip: Making a Buckled Power Strap - EarnYourTurns
Amazon.com : Ski Boot Booster Power Strap by Ski Metrix Ski Boots Accessory Tool for Reducing Shin Bang & Improving Performance While Skiing, Bundled with Boxum Ski Bag (World Cup) : Sports
Booster strap
Booster Power Straps
Booster Strap Ski Boot Power Strap Replacement - Kids Flex - NEW | eBay