I recently put a spolier on and i was wondering is there any other way to seal the holes from the old spolier besides bondo...can u guys help im sick of having a wet trunk

 

try silicone? get either the clear one, or one to match the colour of your car. might work out

 

You may be able to find plastic or rubber caps also. Perhaps at a performance shop both online and local. Check with autozone too.
If it's only temporary, I would suggest these until you can have it permanently sealed and repainted.