I just bought a used dinghy on craigslist but its missing key components i.e. oars, benches, and floor. Have any of y'all heard of the brand "Big Dog Boats"? Any information regarding this illusive company would be much appreciated!!
Seems to be (or have been) several such companies, in the US and in BC Canada. You haven't filled in your profile so I don't know where you are.
Anyhoo.... seats and floors can be made easily enough. The oars can be problematic depending on the oarlock setup on the boat (inflatable, I presume??) But I'd expect any oars could be adapted and in most cases standard wooden oars are usually better - longer and easier to use than the collapsable/small aluminum and plastic types.