Hi Waterbug,
My point is that it doesn't cost any more for the parts to do it right than it does to do it wrong. Some of those early Worrell spin rigs had so many struts, they looked like 1950's TV antennas. When they break, nothing costs more than doing it over again and you blew that leg of the race or that weekend.
That is why it is important for the factories to have a well engineered system and then sell kits.
Bill