Since the one who loathes Libertarians would not answer, and I am not so familiar with Libertarianism, but you did give good explanation, that they invariably have far too much in common with Rats, this raises the questions, what exactly do they have in common with rats? I have heard many of them desire decriminalization of marijuana, like many rats. What else do they have in common with rats?
On some issues the Libertarians are doctrinaire Republican.
Here's an issue of FOLLOWING RULES and already the RNC doesn't want those rules followed because, alas, they are "last minute changes', yet in other cases the RNC refused to act on equally disruptive "last minute changes'.
We are all better off with honest people in the RNC. Sad, but we don't have any.
The principal issue Republican's have with the Libertarians is that the Republican's, like the Democrats, support a Foreign Policy Agenda defined by an extreme Liberal Democrat, Woodrow Wilson, a former political science professor at Princeton, in 1914--spend money; deploy American assets; risk American Lives; define and organize military alliances with other countries many of which do not support direct American Interests; to (in Wilson's words) "make the world safe for democracy".
Libertarian's believe it is time to reexamine these policies. There isn't any real reason to believe that these policies have made America any more secure; or for that matter made the world any safer for democracy either.
We need a foreign and military policies designed to preserve US security in North America; close and enforce our borders; centralize and focus our military assets on policies and action designed to serve direct American international interests.
I suppose a part of that agenda is that many Libertarians oppose use of American Military power to protect Israel. In my own view, Israel is part of our security perimeter so I would dissent from that part of the Libertarian platform.
Libertarians would eliminate our sole monetary reliance on fiat currency in favor of a competing use of monetary metals such as gold and silver as legal tender.