hi Lestef,
When you bear away off wind, lets say, 140 degrees, it actually feels like you are going slower because there is less drag on the sail and the apparent wind increases. You will need more wind to start a broad run, but as the apparent wind increases with your speed, the sail will feel lighter and less "powered up". You can generally tell a fast run at Sandy point when it feel "easy". Sandy is a classic for this as it is a curved run and the angle gets more broad the further you sail. Check your GPS, you'll be surprised....