Dive Rite discontinued their aluminum backplate. They are supposed to announce a new light weight stainless steel plate soon. I don't think it is dedicated to single tank, but never the less I am interested to see it.
I think the single tank teardop plate pre-dates the doubles tank rectangular plate. Maybe we will see a revival.
I think the single tank teardop plate pre-dates the doubles tank rectangular plate. Maybe we will see a revival.