I am sure one of the party pieces from her airshow act (and one of the more popular parts for the public with no aviation knowledge) was to fly around with one undercarriage leg up and the other down. The hydraulic system was split which made it possible to retract/extend each side independently.
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The only hydraulic system on the Prince/Pembroke family is the wipers, everything else is pneumatic, not sure how they isolated one u/c side from the other.