I didn't get the rear jump seats, as my kids will outgrow them long before the costs / benefit is ever realized, and I didn't want to be unable to see them easily when driving. That said, I'm finding getting the seatbelt clicked in with the booster (one is still in a full seat, so that is attached via the latch system) a real pain in the you-know-what. It is a mix of width of the booster and the shape of the seat, and it is making me nuts. My son can't click in himself. Anyone else having this issue, or, if not, what booster do you have?