i recently bough a cheap bong from the flea market. It did not come with a slide, it just came with a unscrewable bowl/cone and a hole in the back to cover. To clear it you just release the hole on the back. Me and my friends are all better used to a bong slide so I am thinking about unscrewing the cone and putting my bong slide in it. (it does fit pretty well). Would this work? and would it still produce smoke?
Assuming I understand your post correctly, if there is a perfect seal it will produce smoke just fine.