I tried looking this up .but could'nt find an acceptable answer. I fish a shallow lake (16' max.) and have an Elite 7 HDI. Since the water is shallow, Would I get better results with a slower ping speed. At the present I have it set to "fastest". Wondering would I be better off with a slower ping speed? Is there a general rule to go by Thought I would ask the sonar masters on this board.. Thanks everyone for any info.....Crappie1133