I have installed both hardtop and side mount outriggers. The difficulty of the install It all depends on location and access. In either case you have a number of through bolts to install. Your 335 may have factory mounted backing plates for taco hardtop riggers, my 305 did. It was a fairly easy install, just drilling holes through the hardtop, sealing and bolting. I installed side mounted lees on my 265, hardest part was figuring out the exact location to mount them, fortunately Grady provided a couple pictures and PDFs of the factory mount locations. I personally prefer the hardtop mounted tacos better. They are never in the way, up there.