I just got the Dolphin Dynamic about 2 weeks ago and I felt the same way you do the first time I put it in the water. I set it all up and put it in the water at night and pull it out the next morning and I too was not impressed. It missed lots of debri all over the floor of the pool and I was ready to return it, but thought to give it another try. The next time I put it in, it did a great job and got almost everything. The filter bag showed that it was working much better. I put it in again last night and will see what kind of job it did this time, I still have time to return it if I feel it's not living up to it's cost. I'll post what I find tonight.

oliverw