Your phone blows up with "can you fix this?" texts and photos mid-job, and half get forgotten by the time you wipe your hands.
Customers can describe the work with a booking request so the scope and requested time stay in one workflow. You load the truck for a punch-list across town and the homeowner cancels when you're already halfway there.
Require a deposit to lock the visit so part of the job is collected before you load a single tool. You finish a long honey-do list, hand-write a total, then wait two weeks for a check that hasn't shown up.
Send a quote, collect a deposit, then record cash or email a card invoice when the work is done. Track payment status from the job.