I bought a 22 foot x 52 inch Coleman and set it up yesterday. I started filling it and now I see it is 10” off level!! I called a landscaping company to see if they could come out and level the area and they are booked out at least 6 weeks. Their suggestion was to partially fill it so I can float and enjoy the last 6 weeks of this season. How high can I fill it before it is too much pressure on the low side?