Now back to serious discussion.
I can only voice my opinion on this. For Striped Bass, tandem hooks are totaly unnecessary. They are a fouling nightmare in most cases. Certainly they'll foul more than a single hook set up, tube fly or not. They increase danger at release time and make it far more difficult. More hooks equal more trouble.
Let's just say that I've caught a few bass. I have, to my knowledge, never missed a striped bass hit due to a "short strike". Bass aren't like billfish for instance that have developed a feeding pattern of chasing down an extremely fast bait fish and grabbing it by the ***, that's where a tandem set up would be an advantage. Bass are "engulfers", they open that huge face of theirs and suck in the entire bait, and almost exclusevly it's head first. Ever try to catch an eel by the tail for instance? Bass key in on those big eyes and they are the bullseye of the hit. They don't chase down a bunker and nip at it's tail.
To me, it's no sense to put an extra hook on a bass rig. Gammi has some nice fine wire big game hooks. The fly will be fine with a hook gap of that size, as is.
I believe the reason you generaly don't see much fouling in tandem billfish type flies is that those flies never "relax". They're cast, striped fast, and recast. Never really letting the tailing get loose and fluid and waveing around the hooks. Bass flies aren't like that. They're cast, allowed to flutter to depth, erraticaly twitched and paused. This gives the tailing plenty of time and oppurtunity to foul as it waves and undulates around that second hook. As hard as those big boys are to cast, as much time as it takes to get to depth, you want every cast to have a working fly. Not a ball of shiny **** being dragged back thru the water, which will actually tie that shiny **** into a knoted mess. No point in my book. That fly is perfect as tied and very fishable. If you're having problems missing hits, on a single hook fly, you're not keeping in perfect contact with your fly at all times. IT IS CRITICAL!
Just my opinion. I'd love to hear other points of view.