icetime wrote:I tend to get exhausted after 30 minutes of paddling
What "kind" of paddling. Just paddling out to the break, just trying to stay in one place due to currents/rips, paddling to actually catch the wave ? In Japan's mostly beach breaks, you can almost walk out to the waves. In Hawaii, some places takes 15-20 just to get to the break.
icetime wrote:the way I paddle currently is legs together slightly above the water and my chest puffed up
Since you are a cyclist, you have to forget to use your lower body and just let the top do the work. Your legs are the biggest muscles and will take away the blood/oxygen from the arms. Let them relax. Don't try to hold them together and up off the deck. Chest too, any actions to lift or engaged the other muscles means less power/endurance to the arms. You need to find a nice rhythmic cadence to your paddle, just like spinning. Don't stand up on the pedals and mash them like a piston.
Question: what size/type of board are you riding ? Where are you positioned on the board ? Most beginners tend to be too far back. It acts like a snow plow.