A Sonic 13 and the TT? Too difficult to handle?
I think a Sonic2 13m and a TT is a great combo but it will handle differently than the well behaved Speed 5 kites. When I asked my dealer about buying them, he told me to stick with the Speed 5 kites. I bought the Sonic2 kites anyway and now I love them but it was not love at first sight. It took some time before becoming comfortable with them.
The Sonic2 was primarily designed for hydrofoils and racing, not TT riding. Of course lots of TT guys love them as well.
They don't launch as easily as a Speed 5, you can launch your Speed 5 at a high angle to the wind at the edge of the window. The first tip will lift up nicely and inflate, followed by the rest of the kite. If you try this with the Sonic2, good chance your tip will flop over and if you do get the thing up in the air, you will want to continue to pull on your floaters and keep the kite stalled until the tips inflate. Easy to do with the 13m in 9-10 knots of wind, not so easy to do in 14-15 knots of wind that you might want for a TT.
I don't want to scare anyone away for getting one but you will find out quickly that they are a race kites. Interestingly, the Sonic Race kites have inflation openings closer to the tip and the tips seem to inflate more quickly. Here again, I am flying a 15m Sonic Race in maybe 9 knots of wind for a hydrofoil so not too scary launching the thing directly downwind and stalling the kite in the power zone.
If you get a 13m Sonic2, I would recommend launching the first time out on a beach that has lots of room. I have seen guys in Turks and Caicos long bay launch them where they have 5m of beach behind the kite, they get dragged and now they are flying a kite with tips tucked flying over the brush. Too many of the beaches that I visit tend to have little room for error.
After flying the kites a few times on a big beach you will get the hang of it.