Pulling hard on hole shot is normal...
..with mechanical steering. If the steering is neutral when on plane at best trim setting and at WOT and best trim setting then you've done all you can. In comparison- a Laser is a fairly small diameter prop, and big block V-6s spinning the larger diameter Tempest Plus/Rev 4, etc props will really pull your arm out of its socket during a day of fishing. I used to run a 21 ft w/225 Evinrude and dual cable manual steering and after 10 years of fighting the wheel I finally gave up- and ordered my current rig with SeaStar hydraulic steering- which eliminates almost all steering torque all the time. I am completely sold on hydraulic steering- and my left shoulder has regained most of its motion.