For the lures and teaser heads we use a lot, they are not in a box at all. There are strips of high density closed cell foam screwed with washers to each side wall of the cabin. We hang them by the hook from them. Not my idea as that is how the former guide owner set it up. Seems to work and I don’t like wet gear going back in a closed space.
As for gas supply for the kicker to main tank. Both the main outboard and the full remote kicker have their own separate gas supply fuel line right into the tank. Their independent fuel lines each go to their own gas line cut off lever valve, then to their own Racor filter/water separator, then to their own fuel line hand squeeze pump bulb and then to the respective motors. In the case of the remote 9.9 yam kicker, the plug in fuel connector on the motor cowling/case was removed and the large single fuel line enters the cowling/case and is plumbed directly to the kicker fuel supply side with a connector and hose clamps. We do not have problems with either motor not getting the fuel it needs. You can start and run both motors at the same time and it does not matter what order you start them in. They are plumbed to a large 80 gal long flat Al fuel tank under the floor down the center line of the boat. The tank is well vented with a large vent hose (don’t recall the diameter) to the outside of the hull to let air in as the gas is sucked out of the tank without causing resistance to the fuel pump of the smaller kicker competing with the much stronger fuel pump on the 225 if for some reason you may have them both running at the same time.
It is a rather cool system and there is a stainless cross connector rod that permanently connects the kicker steering to the main outboard, that is itself connected to duel helm hydraulic steering. The cross tie rod goes up and down with the kicker and does not have to be disconnected when doing so. When you go off plane where you want to fish, you can lower the kicker and start it, put it in gear and turn off the main all in a few seconds and all without leaving the helm seat. It is just as fast and easy in reverse when you are ready to go in or move location quickly to take advantage of a bite that has come on somewhere else. In some circumstances the faster you can do things the better your success rate.