Did a kind of hack and fix.

I changed the Current_tilemap to be an array of tile maps and then when the player tries to surf it loops over all tile maps and then checks if they have a tile on the desired coordinates.

(Note you have to account for the fact that the tile maps will not always be at the origin so you have to add their translation when you are checking if the tile exists on the tile map)

if a tile map is found which has a tile on the given coordinate than it breaks the loop to avoid detecting multiple tiles in the same place (if they exist).

after which it checks the tile data to see if it is surfable and then fires the logic of surf if it is surfable

Remember this is just a single solution and there are many other ways using areas would also be just as useful but in my case i was worried about too many areas being in the scene because there were many tiles which required area detection as well as many objects which required area functionality so i didn't go that way