Two things
1. Inking the area around the spawn circle is not that usful it doesn't give much... It's pretty much a waste of time while you could hurry up and go help your team in the big areas
2. Players get respawned all the time, Because of the fact the paths are so thin when they swim to the big areas they'll just ink their way and that's it one respawn and all of your hard work went for nothing, you better just go help your team
BUT
this area though
Inking this in the other team's side will be usful because players usually do not stop to ink there if they're in a hurry (and players are always in a hurry in this stage)