As a beginner machine, I bought an G-ACE 300 and will be here very soon. I plan to use this machine on the beaches here in the Galveston,Tx. area. I viewed a video and showed there are different coils I can put on the 300. Am I good with the coil that comes with it or would a different coil be better. I'll research this but until then someone may want to chime in. Thanx