The original screws for the handle can be used to mount this. I only recommend mounting lightweight accessories; I would not recommend handles or anything intended to hold the rig.
I suggest orienting the open end of the shoe upwards to minimize support.

I've also included the adapter block itself so you can add your own accessories.
Printer: Ender 3 v3 SE
Material: PLA
Layer Height: 0.2mm
Wall Line Count: 4
Infill: 100%
Support: Yes, for horizontal shoe only
The author marked this model as their own original creation.