There really is no additional specific mechanic needed or applicable enough in the majority of situations - its just difficulty level or situational DMs to other mechanics (combat, repair, etc.).
One could use elbows, or just press body against ladder and push with legs. In MgT, this is just a task check - very difficult probably. With one hand perhaps just difficult. Taking into account the mass, its bulk, how it is 'carried' - difficulty changes.
Climbing a ladder with no hands free is quite possible - I've done it. :wink:Captain Jonah said:...Cinder block in your arms, you are not going to be climbing a ladder. Put it in a back pack and you can. ...
One could use elbows, or just press body against ladder and push with legs. In MgT, this is just a task check - very difficult probably. With one hand perhaps just difficult. Taking into account the mass, its bulk, how it is 'carried' - difficulty changes.