Welcome to our forum.
Thanks for the responses. The D1 dealer is a 3 hour drive away so I've not checked into that yet.
Be careful with dealers that are 3 hours away. Make sure you're comfortable that they can service your needs from that distance, including getting in writing what kind of trip charge you may incur for them to travel that far (even for warranty work).I think you'll find that most all the major spa makers will have spas that are deep (typically 38" in depth) and have a lounger. This combination should accommodate a person 6'1". I'd recommend you see what's out there by finding your nearest dealers. To do so you can go to the websites of some of the more reputable major spa makers (Sundance, Hot Spring, Marquis, Caldera and D1 are my top choices and others will have their own favorites) and enter your zip code and voila.
MASTER .......................they always forget Master Gary