So have a tournament coming up which is a dual list event.

"You will need to bring with you 2x list builds, both being 100 points each and they can be different factions if you wish.

The only other rule you must follow is that you cannot duplicate your ships in the 2nd list, you may use the same upgrade cards in either list but for example you cant use a Phantom in both lists!

You will then have both lists on show to your opponent and vice versa and before the match you will pick which list you want to face of your opponents, and he will pick which list he will face of yours, this is done in secret on your dials, so both of you wont know what your facing until you reveal the dials!"

The last tournament I went to I faced 3 from 5 lists involving jumpmasters. I find this format very intriguing, mainly because I hate playing against Uboats. IMHO they are undercosted for what they do, while they are certainly not unbeatable I find them boring to fly against and most things which are good against them suck against everything else you will see.

So I'll be flying a Veterans Tie defenders list which I doubt will have alot of success against jumpmasters, the question is do I take an anti Uboat list and get into a reverse psychology battle about list picking or not bother and accept that when jumpmasters is an option I will just take the field?

I like the idea. Definitely a bit of psychology involved. I guess the first thing to think about is what list(s) you want to try and how they compare to the current Meta.

You could always try a bit of reverse psychology. Take the list you want to fly and also take a maxed out triple U-boat list. You don't even need the models, just the list. Let everyone see the U-boat list and then always fly the other list.