Quicksand Fans

I'm thinking perhaps it is be "The Trap" or one of those, some producer called BSM I think, "bondage, snakes, mud", something like that. Did two or three mud scenes.

I specificially remember the AFV scene with the woman stepping out of the row boat. She goes right to her thighs in thick mud!! Looked like somewhat solid ground, and certainly never would have guessed it was that deep either. The people in the boat were laughing when she went in because they set her up. I have it on VHS somewhere but have no idea how to get it on the computer. But the scene you speak of does exist!

I've seen that AFV one too.