We like to hang out, play basketball, play volleyball. However, we also like to jump into the pool and swim under water in a deeper area. Depth is tough decision. Pool will be 38 x 18. Right now we are going with 15 feet of length at 3.5 feet of depth. Then 15 foot length of slope to 6.5 feet depth. Then about 5 feet flat at the 6.5 feet depth before end of pool depth rises back up a bit over last 3 feet. Any thoughts, concerns, recommendations? Wondering if might be better with each end starting at 3.5 and sloping to about 4 feet at about 12 feet from ends. Then slope to 5.5 feet in middle. Thx!