I'm sorry, I don't understand your objective. I have the same Bolt/sensor combination as you. You can swap sensors between bikes, or rely on GPS for the two bikes that don't have the sensor. Keep in mind that each time you swap, your Bolt has to recalibrate for differing wheel sizes (assuming you're on auto-calibrate) and this might lead to measurement errors until the calibration is complete.
Originally Posted by
bonsai171
I'm actually using a Wahoo Elemnt Bolt. Right now 1 bike has the external sensor, the other two don't. We have a 95 mile bike trail down here that I ride often, and there is heavy tree cover. In some areas the speed will fluctuate (will be riding a steady pace of 16 mph, then the speed will drop down to 10 or 0 then go back up). Works better on the bike with the external speed sensor. I suspect the same will happen while mountain biking (had some dropouts riding gravel thru areas with heavy trees last weekend without an external sensor too).
Dave