My layman's intuition would suggest that once one end is free, it should be possible to "wiggle" the other end out. If they can rotate the hull into a more para

My layman's intuition would suggest that once one end is free, it should be possible to "wiggle" the other end out. If they can rotate the hull into a more parallel position, couldn't they rotate it back, repeatedly, with a longitudal vector component in addition to pulling sideways, and pull the other end out a little with every direction change? I'd expect a sandy canal ground to have a quite considerable delta between static and dynamic friction.