I dont have a round nose as of yet. I have five turbines hydros.But all hydros have the same princeable,All run on three points surfaces on the hull.All where design to run on clam waters. theres time I could run on alittle chops less then 2". 5" is to much.But with any chops you sacrficing the preformance of your hydro.[8D] You said Joe said it runs alright? Do you want a boat to run on alright?Or run at it's best preformance at very fast speeds? To Me I rather have my preform at it best on clam water at top speeds.