Just ordered my new rt188p. Never had a new boat. Was thinking about going with the minn Kota80lb fortrex with integral us2 transducer. HB g3n helix 9” at the bow , networked with Ethernet cable..to the 8” g3n at the console. Both units will have si di. So in my mine the si transducer would be mounted on transom. I believe the 8 would come with the si transducer. And I guess I could order the 9” with out the transducer. My question is what about speed and down imaging while I’m running big motor. Shouldn’t I have a second transducer in the back also? And what kind would that be? All the electronics is new to me but want to learn and get my moneys worth. Any thoughts would be appreciated. Thanks Redwurm