I was looking at the same problem.
The bracket itself is custom from Tim's Marine in Sacramento, CA.
First off - I already own the Honda 9.9 that was being installed. It's a 4 blade power thrust model. Downside is that there is no steering tube on the transom bracket associated with the outboard - that made for a bit of customization. If I was buying a new kicker today - it would be the yamaha with the power tilt.
On the previous boat, the kicker was controlled with the tiller handle since it was reachable. On the 248 and the integrated outboard bracket transom, access to the kicker is terrible. My initial thought was to control the direction by connecting the steering linkage up to the existing yamahas. That turned out to be very challenging due to the motor well. The steering mechanisms were at different elevations and the kicker was farther back. The installer recommended an electric steering controller. I picked up the PowrTran Python steering system with the wireless remote. Down side is that there is an interference fit. Turn the motors in opposite directions and the cowlings collide. If either engine is straight - then a full range of motion is available to the other. So - the Captain has to pay attention.
The beauty of the wireless steering is not being stuck at the helm or hanging over the transom. If the conditions are calm (like a lake with almost no wind) then you can simply keep the honda straight and steer with the Yamis as rudders. Works well with the autopilot.
I used to use the honda to maneuver around the docs with the kicker on the old boat, but that boat didn't have twin Yamahas. Sometimes it didn't even have reverse... It's more challenging today because the shift and throttle are waaaay back there on the transom. Today I really use it for trolling. In that regard the fuel burn and mostly odor are the primary benefits. The Yamis don't like to idle for hours on end and the emissions from the Honda are undetectable.
Speed range: <0.1mph to about 5.5 mph
Before:
After:
Close up of the bracket:
