If you can get power to the ignition switch to where the tractor tries to crank over but wont, you can hold down on the ignition key to try and start while at the same time holding down on your joystick, the battery should be able to give the HYP pumps enough juice to slowly lift the FEL off the ground a bit. We have to do that here from time to time for tractors that will turn over but not crank.
That definitely sounds like a good trick to remember. I'm going to try that once I get everything else straightened out. This is a pretty awesome community. Thank you for spreading the knowledge.