Danger,
Depending on how far out of the water your transom sticks you may want to anchor backwards. If i park nose first i get water splashing over the transom all day long soaking my motor, electronics, and filling the boat with water. It can also push sand against the bucket making it stick (not fun when you figure it out).
I started backing my boat in this year and I am not going back. I put a sand anchor in the front (if you are anchoring in rocks it sounds like the box anchor is the way to go) and another in the rear keeping my boat out about 10ft. This keeps the jet out of the sand and the boat from flooding all day. The two anchors keep tension on each other and the line absorbs any wakes or waves.
steve