Mike,
I'm not familiar with watching recordings at home on the unit itself, but I think it should be possible to start up the unit in Simulator Mode and watch your recordings at home. In Sim. Mode it's not necessary to have a transducer connected.
To get in Sim-mode just press the power button and then the menu button within the first three seconds during the start up process. In the start up menu is the Sim.-Mode option.
Greg or Robert, please correct, if I'm wrong here.
Regards / Harry