I do not think it will increase conservative turnout to boycott the debate, I was simply replying to an assertion that conservatives will love this typical Trump action. Turnout, given Trump's position as far as we know it from Real Clear Politics average of polls, is vital.
Perhaps Trump has a silver bullet up his sleeve, perhaps the soon to be released documents damning Hillary Clinton, Obama, Biden and the rest of them. Maybe he intends to run on that?