It gives me a chance to see many players that I might not have seen during the spring as well as seeing players who will be draft eligible in future years. One way that players get noticed is that their physical skills stand out above other players. That is the most obvious and also the one that is most out of control of the player. A players skills are what they are at a given moment in time. A scout may or may not see those actual skills on a given day but if they are present, they will usually emerge at some time.
Scouts also notice whether a player works hard, hustles, enjoys playing, etc.
Players will be most successful if they play within their abilities and play hard. One option would be to send it directly to the scouting department of the major league club. The club will then forward the information to the appropriate area scout. Agents and recruiters are just a matter of individual choice. There is no right or wrong answer.