Systems and methods for mounting a propulsion device with respect to a marine vessel

A system for supporting a propulsion device with respect to a marine vessel, the system comprising:

• an elastic mount configured to support the propulsion device with respect to the marine vessel, wherein the elastic mount contains an electromagnetic fluid;
• an electromagnet configured so that increasing an amount of electricity applied to the electromagnet increases the shear strength of the electromagnetic fluid in the elastic mount and thereby decreases elasticity of the elastic mount, and further configured so that decreasing the amount of electricity applied to the electromagnet decreases the shear strength of the electromagnetic fluid in the elastic mount and thereby increases the elasticity of the elastic mount;
• and
• a control system configured to:
• apply a first amount of electricity to the electromagnet to produce an initial elasticity of the elastic mount;
• determine that a vessel speed indicator exceeds a high speed threshold;
• determine that a trim position for the propulsion device is greater than a threshold trim position;
• detect at least a threshold decrease in throttle demand;
• and
• apply a second amount of electricity to the electromagnet, wherein the second amount of electricity is greater than the first amount of electricity, so as to decrease the elasticity of the elastic mount.