You can make a signal tape diaper with the normal 2 tape adult diaper by just folding in the bottom part and just tape the top up. it will hold with out leaks as I have try it with plastic back / cloth ones.
I believe the OP means "one tape per side". I did an images search for kendall and those are definitely two tapes per side. If you meant no "double tapes", I don' think that's what the OP was referring to.
If I may ask, why does it have to be single tabbed? Is it for increased versatility or is it just a novelty? Because I see very few practical reasons to have single tabs. You won't get as good protection or fit as you would with the double tabs so unless you're doing gymnastics or pole vaulting there's not much justification to narrowing your search to single tabs.