Fort Worth load chart math will humble you for sure. Lotta guys fail that part because they rush the boom angle instead of just writing the numbers down first. My trick for the written is read the question twice before you even look at the answers, because they word them to trip you up. Skip the ones you get stuck on and come back, sitting there spinning on question 4 just burns time and nerves.

Leave a quarter inch was the best tip I ever got too.

Used to buy into that fail fast stuff too until it cost me a real deal. Lost a repeat customer because I rushed a quote and missed a line item, and that one mistake wiped out months of profit. Slow down and do it right the first time, because some clients don't give you a second shot.