use super one click. head over to xda for details
^ Does not work on BL7 Defy+
Just in case you were curious about BL6 Defy+ rooting (version below 2.3.6)
Motorola Defy+ (MB526) Rooting & Dual-Booting Stock + Custom ROM Guide | s0 s0ulless......
Rooting Defy + having BL7 (2.3.6 version) is kinda tricky cause of locked bootloader. Guys at XDA however did manage to root in recently...although no automated method is currently available,it is still 100% root-able.
Here are few links you'll need:
LINK 1
LINK 2 (checkout page 5)
Cannot vouch for this one, but still...
All in one
After root 1
Let me know the outcome, recently bought Defy+ 2.3.6