Persevere for a bit longer bighen ,and master the basics befor you get in to the harness,see how you go on your 140 lt as well ,there is no real rush,its quite amazing rearlly the length of time as a beginner you can sail without a harness,,once you feel competent in your abillity to control the wonderful feeling of the wind driving you forward and leaning back on the sail in control then you will be ready to move on to the next level of getting in to the harness,then there is no turning back ,stay with it.