Anyone have any recommendations on a booster for a 2013 or 2015 Ford Focus that is not a pain to buckle. The buckles are recessed down in the seat and is impossible for my almost 7 year old to buckle with the boosters that we have tried so far. It is not easy for my husband or I either! We have tried the Graco Affix and a Recaro Performance Booster and they both have to be slid over to buckle. Pondering a Clek Olli. He does fine in a low or high back booster but would love to find a high back that would work for long trips. He is 51" and 75 pounds for reference.