I got like 75% take with loquats using cleft graft on about 6 out of 8. Scion was about chopstick to pencil size. All were grafted in Feb. Made sure the cambium layers lined up. I also made sure they were tightly sealed with buddy tape. I am by no means a master grafter, these are my first successful with loquat.
I left most of the leaves intact and then took off all leaves except one, after the graft pushed. I just made sure the grafts were made on stems showing active growth.