Hey Tom, long time no see. Hope all is well.
From what I've heard, a leg kick in the handlebar will break any steering lock.
Then, you don't need any picking skill, but just an screwdriver. Remove the headlight. In the headlight shell, where all the wiring goes, is the block connector of the ignition key -in bikes with ignition key in the upper yoke. If you have your homework made, by then you would already know which cables to short. You may even save you some time if you have a block connector ready made. Unplug the ignition key connector, and plug the one you have made with the short in the ignition, and off you go.
I have seen U-locks removed in a matter of seconds. A car scissor-jack will break it an a matter of seconds. Cable ties are useless to, for $20 you can buy cable-cutting pliers. And chains are also cut in seconds with a rod-cutter. Just go buy a chain by the bulk and see how much does it take them to cut it: the same time will it cost to cut the chain when on the bike.
Trailer locks seem to me the best option, if only because the doesn't provide good leverage to either cut them, force them open or pick them.