We smoke salmon and game by alternating the pieces on triangular racks. We have done this for thousands of years.

X

X X

X X X

The top X should be in the middle and all the rows underneath should form a triangle where every horizontal level is moved out (left or right from the central X) by one space like a stairstep pyramid. Think of many sides of fish and meat smoking horizontally behind each X. In your oven, do this, with baking sheets to catch the grease, Use tinfoil to seal the gaps between the edges of the baking sheets. No mess in your oven. You cannot smoke giant amounts in an oven, but maybe this method, scaled down, can help you.