I hunt whitetail out of a tree stand in Macon, Mo. where it's mostly farm fields, corn, beans, etc. For the majority of the morning and evening hunts I stay in the stand, about 12 feet up, and use a Marlin 336 with a 4x Tasco. As many of the fields are several hundred yards long, I appreciate having a scope. After a lunch break though, I usually walk the fences and try to see what I can kick up, so I would like to be able to use the iron sights. My idea is to mount a QD scope mount, so I can have an optic on it while sitting, and take it off for when I walk around. Is that a silly idea? Would I be better off with just mounting see-thru scope mounts? I'm looking to replace the Tasco with a Leupold VX-7 1.-6x24, with the Circle Dot reticle. Are there any QD-style scope mounts that are well known to not lose their zero even if taken off/put on several times? Hate to play 20 Questions, but if I'm going to be dropping ~$800 on a scope, I want to pick the right one. Should I even be spending that much on a rifle that only cost me $400 or so? Thanks guys.