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You can't really P&G a Jeep because you'll loose speed too quickly thanks to it's worse than a brick aerodynamics. SG2 suggests than P&G is less efficient than DWL as the pulses are too long and the glides too short.
If the hill is really, really steep, you can EOC, but the steering becomes extremely heavy.
The 91 probably won't have DFCO at all so EOC up to a stop/ red light is a good idea.
The big 4.0 isn't too keen on being bump started, but with enough practise it can be done.
The Wrangler is an old school part time 4wd system, you can be in 2 or 4wd and just bump start it like any other manual. You won't harm it. I suppose if it were flat towed long distances putting the T/Case in neutral saves a little trans wear (no part the the trans would be spinning), but it really doesn't apply to this situation.
I normally get into the low 20's without EOC (Hardtop, 31" tyres).
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