Moving tank help

[coastalnanoreef]

So, I go to college about 3 hours away from my home. I've made the move with my 10g multiple times with success. I had purchased a 12 gallon bucket or something like that so my whole rock structure could fit in it. The rock used to fit in a 5 gallon but once I loaded it with corals it could no longer fit. The problem with the last move was that a few of the corals fell off when they hit the side of the bucket from sliding around while driving. I was wondering if I could buy aquarium gravel/rocks to dig the rock structure into inside the bucket to stop the rock from sliding around. Would I need to cycle the gravel before the move? The move is only 3 hours so I want to know if cycling them is a must or if I will be fine? I will attach pics of tank and bucket. Any help is greatly appreciated!

 

[Saltyreef]

Use some bagged live sand or your current sand but make sure its rinsed before putting the rocks on top

 

[redfishbluefish]

I'm not seeing any thin sticks. Why not just wrap in bubble wrap and then fill the bucket with saltwater. Just a thought.