Do you have an assistant to aid you in using a device? Using a Extender will be the best way for you to gain length with no use of hands but it will require help in putting on. There are three to choose from here:
I have an assistant but not day in and day out like i use to have. I did manage to get a wide shoe lace and make it like a noose in a way where it can open and tighten. Would that help any?
So maybe you could use the SizeGenetics as a loop attachment is one of the many attachment they have. Also, the Velcro attachment may also work well for you since you can make a noose you should be able to use the velcro strap. The VLC attachment may made it easier for you to get in and out. The PeniMasterPro and the Phallosan used vacuum attachments which may also work for you with some practice. It is so hard to tell without having the issue.