Get a vario to be sure. But on average 2500 to 3500'AGL with a 5-6 meter ship is average. A BIG variable is the sky condition. Dry air with good cumulus the best, with killer blue the worst.(unless of course you are flying in rain or some such nonsense) John Derstine E-mail; [EMAIL PROTECTED] Scale Soaring: http://www.Geocities.com/~scalesoar RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]