Rather more than imitation, it looks almost like a straight rip-off. A whois shows the site was registered on 5.01.2017 by a Nick Kowalski in Somerset. The videos and instructions are “available after purchase of a kit” – why are these not public??? He will sell you a sample pack of red, blue and black fabrics, but only sells the kit in green. Hmm. While many of us are fans of green boats, the shade he offers looks more neon than stealth.
Take it as a compliment Matt, and keep going. You’re doing an excellent job.