Ryan, sorry I don't have those pics, but I know just what ya mean.
There are a couple of pics I've seen wherein Arnold looks athletic but not really a bodybuilder. I think they're both beach shots. In one, he's stretching an archery bow (maybe Frank Zane got him into that) and in the other he's bumping hips with a woman in a bikini.
I mean the woman wears a bikini, not Arnold LOL!
I'll have a look for these pics, post them, and you can tell me if that's the look you meant.
TNBT