[Weirdosport]

If you saved the trailer number to an array when you spawn it:

pawn Код:

trailer[playerid] = CreateVehicle(trailer stuff in here);

When it comes to removing the trailer, just do:
DetachTrailer(trailer[playerid] other stuff here);

Followed by:
DestroyVehicle(trailer[playerid] other stuff here);

(Don't forget to set trailer[playerid] back to 0/-1)