If you are trading just one pair, I would place more than one order per direction. Say 4 buy pings and 4 sell pings. Look at the market and try to guess what could be a reasonable price range (max and min) for the next hours-days (good luck with this). Do not use suggested price for more than one order of each type. Place the rest of buy orders in the lower half of the range you guessed and the sell ones in the upper half, at a different price each order. Don't forget to check where current prices are with respect to your guessed range. The 4-4 proposed number of orders is assuming that current prices are at the center (50%) of your guessed range. If this is not so, you may consider to place 5-3 orders, etc. Obviously, all buy orders need to be below current prices and all sell orders above current prices. The orders at recommended prices will execute almost inmediately. The rest may take a while depending on price movement. You may need to relocate some pings if price moves in just one direction, this has no cost. Pongs are better managed by the stop loss.

As a minimum you should create a stop loss wherever you feel comfortable with, and rise Min % Garanteed Gain a bit. What is a bit? Well, it depends how wide is the range you guessed and how expensive are commissions and fees in your exchange/market. LTC is not one of the currencies with widest daily ranges. I would try with 1% and see how it goes. You can fine tune both settings once the orders are created (don't forget to press "Update Ping-Pong Parameters" button if you do so). Too many unfilled pong orders even the price moved in that direction? Your % gain is too high. Too many negative values in your Global Gain sheet Total Gain  column? Your % gain is too low.