Im sure the research has been done, but on the off chance it hasn't, there are other blind tandem groups
https://www.intandembike.org/ https://mcgee.ventures/bikes-for-the-blind/ Not vouching for them, but a quick google search brings up several other organizations. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.