I have the Millennium B100s. They work great. But... I am also lazy and like to, you know, manspread my d**n legs but the straps get in the way.

 

I have found this:

https://wiseseats.com/products/wise-3373-aero-x-cool-ride-mesh-boat-seat



Same seat, less the straps. 400lb capacity. Judging by how hard it was to find someone carrying these things, I am guessing not a lot of people know about it? Haven't had the chance to test em out, let alone mount em.

Just an FYI and they are like $70 more than the Millenniums (at least where I bought em for $169)

Look super comfortable that’s all I gotta say.

Millennium makes a cable kit that fits much closer to the hinge that can either replace the 'armrest' straps or fortify the chair in addition to the straps. The cable kit costs around $17 on A.

 

The camo versions of the Millenium B100 (there are two) come with both the cable (installed) and the straps that are not installed when you get the chair.