I heard it was a dinner at Marvin Bushs that the elder Hinckleys were scheduled to attend the night before, but didnt. I think 25-yo JH jr was a fine candidate for mind control and could hardly have had a reasonable deadly animus or motive against a 60-day old presidency of RWR on 3/30 (33), 1981.
Who stood the most to gain had Reagan died? His Veep, wed have to say! Its not as if GHWB didnt have assassination experience.
GHWB would later direct an unsuccessful assassination attempt against PDJT on 6/10/2018. GHWB died 11/30 (11x3=33).
Let’s not forget that Reagan really did not want GHWB as his running mate. Even to this day the Reagan wing and the Bush neocon wing are still fighting for control of the GOP.