Is doing this way consider gaming:
1 hour block:
accepted 2 jobs, done, maybe got less than 5 minutes
off 'available for jobs' - because do not want to accept third job, and practically it would be high fare long distance (heavy traffic) job to burn this and next hour incentive payout. no mind not full hour online, prorated as 55 minutes doesn't matter.
Grab Driver Discussion V4, Info and FAQ