https://www.amazon.com/Highland-2006200-Black-Heavy-Carrier/dp/B0002MABL4/ref=sr_1_7?dchild=1&keywords=vehicle+gutter+mount&qid=1597267441&sr=8-7
You could modify these by installing steel plates to make them extend up higher.
<Edit>Oh, doesn't look like your gutters are exposed anymore due to...