Just dragging the ship across the sand risks damaging the hull and making the situation worse

Not to mention dragging a 300,000,000 pound ship through sand is... difficult.

Next subsidized Elon venture: The Dragging Company.

"It's A Real Drag(TM)"

Hmm. Are there magic fish that eat sand what we could release down there?

Maybe we can use pumps to inject the sand with hagfish slime?

SuezGlide(TM)

That's going to either snap the cable or damage the propeller. Probably both.