Most sellers are aware of constraints on buyers due to work schedules, and should be able to meet with you at your convenience. You can't let yourself get caught up in "gotta get there fast before someone else gets it" thinking. Nice motorcycles will become available on the used market if you're patient, and if you don't have your motorcycle endorsement yet, you have no reason to be impatient.
It sounds like your best option is probably to ask your in-law when he might be able to help you pick up a motorcycle you're interested in, and work from there. Looking at it by scooter and leaving a deposit and getting a written receipt if you like the bike, and then going back with your in-law later that day or the next day would be reasonable. That way you can look at several if you need to, without wearing out your welcome with your in-law.
Funny all the replies within about 3 minutes while I was typing.
