Looks good...alternatively, if it's not a big deal to make the harp taller, then just extend the vertical bar further and terminate both wires along the vertical member. No need to make the upper horizontal bar, and the tool is just 2 solid pieces and 2 wires (yeah...I realize it would be a LOT taller ;-)

Now then, the question is "What angle?" It would be interesting to know the reasoning behind the 5cm rule (if there is any) and what size rider that was intended to represent. Personally, I wouldn't mind it being on the steeper side. IMO, whatever is proposed should have some solid history/reasoning behind the angle selection to make it more "palatable" to the powers that be...perhaps a photo study/analysis of where top TT riders actually sit?

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