For the athletes that play multiple team sports there are really not many at the pro level in the modern era that have done well at more than one. Bo Jackson, Deion Sanders, MJ, etc tried baseball for example but none of them where great like they were in there primary sport.
So lets say you have a kid (i know some well) like Odell, they are track star fast, playing multiple sports lets say football, basketball, soccer to make it simple.
Come HS age the american football coaches all around are recruiting your player, basketball coaches and the soccer somewhat but not nearly as much as football. Your player is outstanding at each sport, track records locally, plays on the top teams each sports, goes to tournaments shows well, teams win championships in each sports, get invited to regional all star type events, the whole 9 yards, etc.
Your player loves soccer the most followed by football, and basketball, runs all the time so wants to do track & field also. Knows HS football players get the most attention, praise, girls lining up, packed houses at the games, a exciting atmosphere. Basketball games also with good support and attendance but not nearly as much as football. Now there is soccer where much fewer people show up, no cheerleaders, rallies, or much of a atmosphere or support.
Your players has to choose now since playing all 3 of those at the same time is not possible due to the overlap in HS so what would you advise your player to consider as some of the most important things when choosing one over the other? Through in academy soccer and you have another monkey wrench.....Soccer and Track seem to be the only ones possible in that scenario.