I was using a Hulk Frame brace https://www.thingiverse.com/thing:2189694 and tried a few different BLTouch mounts but they either hit the brace or were not in a good spot for my printer build.
I designed my own with Fusion 360 to fit my needs.
You may need to add a few washers to set up the basic Z height.
I'm using Marlin 1.9.1 firmware.
define X_PROBE_OFFSET_FROM_EXTRUDER 14
define Y_PROBE_OFFSET_FROM_EXTRUDER 62
define Z_PROBE_OFFSET_FROM_EXTRUDER // x.xx You need to figure out your Z offset
define LEFT_PROBE_BED_POSITION 20 // MIN_PROBE_EDGE
define RIGHT_PROBE_BED_POSITION 200 // (X_BED_SIZE - MIN_PROBE_EDGE)
define FRONT_PROBE_BED_POSITION 62 // MIN_PROBE_EDGE
define BACK_PROBE_BED_POSITION 200 // (Y_BED_SIZE - MIN_PROBE_EDGE)
Supports "Touching Build Plate"