The first thing about pull downs is to send a Phone Call to either the coach or the player.
You have to be mentioned as a "back up option" for the player to be able to pull him down.
If you ARE a backup option, then you can send scouting trips to get him to consider you.
But 10 might not be enough. Some guys come down with 10, most guys come down with 12 or less. But if I really need to pull someone down fast, I use 16. This is all for Div-2 .. I do not stay in DIv-3 very long because there is not enough recruiting money in Div-3 .. so 10 trips might do it more often there.
But, some people do take a longer approach. They do 10, the 2 every turn until they pull him down. I guess that is OK for guys that everyone is not trying to pull down. Usually lots of people are trying to pull down the guys I want at Div-2, so getting them fast can be important.
In any event, for > 360 miles, it is quite expensive as a scouting trip for 360 is $296 .. but at 370 it jumps to $531. For 16 trips that is $4736 or $8496 .. a fairly large difference. For that reason, I hardly ever pull down guys > 360 miles either (unless I have a lot of cash and the guy is really, really good).