B&M Flyer you pull down the harness. As you pull it down the foot restraints lock into place. If they don't then a ride op puts them into place. What's so complicated about it?? And you guys are right they do make you feel secure.
I know it's an awkward topic but what coaster (or flat) has the most complicated restraints to deal with. Also post a picture of the restraints if you can find one.
For me Vekoma Flying Dutchmans and TOGO Standups
TOGO Standup
Flying Dutchman