The money as a mechanic for me is much more consistent than charging. I go out early morning and pick up the scooters the chargers dropped off the night before. They are easy to spot on the map since they have a charge close to 100%. You rarely come across hoarders on the map which is nice. With you being handy the mechanic role is the way to go.
Bird will only let you be a charger or mechanic but I found a work around This is an image - REGISTER or LOGIN to view.
. Ask a spouse or family member to sign up for Bird as well and use an email address you have access to. You can then switch between accounts depending on what you feel like doing.