I find walk assist easy to use on the flat, but on the flat you don't need it, on a 1 in 6 hill I can't walk at 4 MPH, so want the walk assist to be really slow, my bike still has a throttle, but useless with walk assist, end up with bike charging off without you, wife's bike is mid motor where mine is on rear hub, but hers is fixed frame where mine folds, so with mine the peddles also fold, with hers the peddles end up hitting ones shins as it goes either too fast or too slow, so in both cases theory is OK, but in practice does not work, I end up carrying my bike up the steps at side of house rather than use walk assist around back of house as just to hard to use. Or I fit the bike rack on car and take bikes on that.