Roof rack storage boxes are a pain to access. They also negatively impact fuel mileage.
We’ve had a Stowaway2 Max hitch mounted cargo box for five years.
Hitch Cargo Box - Max | StowAway
Pull a latch and unscrew a security “T” bolt and simply swing the box out of the way to access the T4R hatch. It holds 200 pounds of weight and is lockable.
We’ve probably traveled 40,000 miles of road trips with the Stowaway2 with no problems. We do a lot of hiking and it works perfectly to store hydration backpacks, muddy hiking boots, hiking sticks, dirty hiking clothes and camping gear, etc. We’ve done some mild off road driving to remote hiking spots and it did just fine.
The Stowaway2 comes with a u-bolt like stabilizer that clamps down to keep the box from flopping and wobbling around like inexpensive trailer hitch cargo racks. It’s rock solid and so much easier to use than roof storage boxes.
It’s not cheap, but it’s been a great purchase for us so far.