To begin, the Honda OEM carriers only support a single kayak when used with the OEM cross-bars (maybe two for a couple really narrow kayaks, but don’t count on that).
The better option is to go with Thule cross-bars (like the Wing Bar Evo) and then you can get a Thule kayak carrier(s) to hold your two kayaks in a vertical position.
Thule has a nice fit guide: Fit my car
The better option is to go with Thule cross-bars (like the Wing Bar Evo) and then you can get a Thule kayak carrier(s) to hold your two kayaks in a vertical position.
Thule has a nice fit guide: Fit my car