Ain't never gone marmot hunting, but usually see a few where I chase mountain quail. They are a real nuisance here; especially in the national parks. Backpackers who leave their vehicles overnight often find radiator or break lines eatten by the big squirrels(they thrive on brake fluid and anti-freeze!).
It is really wierd to look at the different things folk wrap their vehicles in to try and keep them out.