"Dog Hunter"
My sail inventory has (1) very light #1 153%, (1) medium #1, and (1) heavy #1. (1) #3 blade and a half dozen spinnakers. I use the light #1 mostly to 10kts and move up from there. At 20+ we are into the blade #3. The 130 #2 that the boat came with is at home in the garage. It's not a good racing sail! You will find that the 153/155 will become your most used headsail. Hull speed on the 33.5 is 7.22kts. The theoretical hull speed of a displacement hull sailboat is 1.34 X square root LWL. Your LWL is 29'. The square root of 29 is 5.385 and multiplied by 1.34 = 7.216
My sail inventory has (1) very light #1 153%, (1) medium #1, and (1) heavy #1. (1) #3 blade and a half dozen spinnakers. I use the light #1 mostly to 10kts and move up from there. At 20+ we are into the blade #3. The 130 #2 that the boat came with is at home in the garage. It's not a good racing sail! You will find that the 153/155 will become your most used headsail. Hull speed on the 33.5 is 7.22kts. The theoretical hull speed of a displacement hull sailboat is 1.34 X square root LWL. Your LWL is 29'. The square root of 29 is 5.385 and multiplied by 1.34 = 7.216