Not really a fair question, since I absolutely loathe Temple of Doom for reasons other than visual effects. But the special effects in that film certainly aren't anything to gawk at. The raft looks incredibly fake as it stays perfectly upright during the fall, the mine cart jump looks terrible, and Mola Ram's fall, while spectacular for its time, does look rather dated. I find the heart-rip to be the best effect in the film, and that's closer to makeup and props than SFX.

But I wasn't so much debating the visual quality of CGI as I was the assumption that it's easy. It most certainly is not.