You don't want to tie off to the dock hard enough to prevent rolling.
You'll break something.

Get a couple pieces 3/4 inch plywood 2 to 4 feet square (depending on
size of boat) and embalm in epxoy. Drill holes and make a bridle for
four lengths of rope coming together so that the sheets are held flat
when suspended by a single rope. Attach a heavy weight to one side of
each plate. Then weight the opposite side so that it just barely
sinks level when lowered into the water.

Tie one of these to amidships cleat on each side. When the boat
rolls, the weight heavily weighted side will let the plywood tip and
sink easily. It will then be pulled flat on the return roll. With
one on each side, there will be enormous roll damping. The weights
should be heavy enough that you can just lower them to the bottom and
tie the ropes off when leaving the slip.

One of these bow and stern will also damp pitching. A refinement is to
incorporate those dockline snubbers into the side of the bridle
opposite the heavy weight to soften any slight shock.

--

Roger Long