I can see how your summer temps are higher. Certainly if you went a little deeper that couldn't hurt. The air temp is not the critical issue. The WATER temp is the critical thing. So you would have to sample your water temps right about now and different depths and see if there still is some type of thermal drop off or thermocline that the fish could still get in and have a little cooler water available to them. I agree that Texas ponds where surface temps are 90 and deep temps are nearly 90 are not going to work well with standard YP. The Rio Grande YP strain may be able to tolerate more heat.