yes ,we have a bullet 278 RLS lightweight and we looking into a bunch of mods for ours,a ladder install being one of them. the dealer said no way nothing to drill into that was solid enough to support any weight , so my dream of throwing myself off my roof on a nice summer day was crushed..
.. so a few weeks ago I purchased a 4 in one ladder from a place called Costco here in Canada..turns into a 8 1/2 foot step ladder, a 17 foot slide ladder , a ladder to conform to stairs and is able to make 2 - 4 and a1/4 high sawhorses..it take down enough for me to side it in the front basement compartment .it was on sale up here for like 70 dollars.might be your safest and easiest way to get on your roof .