We were hoping that an 18x36 deep end pool was big enough to safely have a slide and a diving board. Yet the pool professional who spoke with us said the entry envelopes will overlap. We live in Illinois. I just couldn't believe that we didn't have enough room. We were going to do a flat 42" shallow area for about 14 feet and then the remaining 22 feet was going to be the slope/diving depth. It seems silly to do a diving depth pool if we can't fit a diving board! I swear I have seen pictures of pools with both. How can it be done?