I didn't buy these myself, but our swings were also a total bust. Nova hated them! We had one that she had to lay in and she loathed it from the beginning, and later on my grandma brought over one where she could sit up, but she hated actually swinging in it. We kept that one in the kitchen and just let her sit in it while we cooked and stuff.
It is funny how some must haves are total wastes for others, and vice versa