I do continue to experiment! I flew my SSUL 2 days over the holiday weekend - smiling the entire time!
The Zeroair spars are so light that the kite gets little to no mass advantage from them. They are extremely strong however. I've flown this kite from 0.5 to 9 and, while I was concerned nearing 10, the kite seemed fine assuming you keep it away from the ground that is!
Adding 1.5g weights on the lower ends of the spars makes the comete have a bit more rotational mass and also gives a bit of throw for taz, etc. I've tried attaching them just below the lower apa connectors and I am liking it there.