Limpet is an awesome set-up and have seen it beat all sorts, have also seen it have the wheels and motors chewed out of most of one side.

Sam highlights my point about your options of fending off a spinner are thick angled metal or to snag the blade. Getting thick angled metal within the beetle limits is proving incredibly difficult given that even a 0.5kg blade will go through 15mm hdpe and 3mm steel. Obv the spinner builders are not going to like blade snagging.

A half combat beetle class is probably the way forward. Probably need to get stu to read this thread and see what he says, since most of us that enter regular are into the beetle thing at the mo. Tbh I'm hugely sucked in, but the spinner thing is making it unsustainable.