You should be able to hike upwind in moderate conditions whatever your bodyweight. If the conditions are marginal and you find that you are just perched on the wingbar. Try to sail a little freer and look for maximum power from your rig.
Keep the boat level at all times, the toe straps must be set up so that hiking is comfortable in such a way that you can easily extend your upper body in and out to help power and control over the waves. The sail power must be set up to match the leverage you apply when hiking. The upper leach must exercise correctly to automatically exhaust excess power in the gusts. Sheeting angle and kicker tension depend on water conditions but the sail should be sheeted much wider than normal conditions. Do not pinch the boat harder it blows, the wider you must sheet and the lower you sail. Kicker, generally in flat-water conditions use the maximum you can without distorting the sail. You may need to slightly reduce kicker tension in rough sea conditions to increase the amount of rig twist; this helps the boat to accelerate over waves and also reduces the amount of sail sheeting necessary to maintain control. Concentrate on keeping the hull moving by accurate steering and use of your body weight to allow the hull to follow the water as naturally as possible. It is essential to watch the waves and the water pattern very carefully to choose the fastest route and to ensure that your body does not slam into the waves as this is very tiring and loses a lot of ground to windward