If you already the PS30 transducer, I think the best bang for your buck would be the ECHOMAP ULTRA 106SV (GT54 Transducer) the processing speed is supposed to be four times faster than the
7" and 9" models and the pixel count is almost doubled for better clarity. STARTING ON MARCH 9, 2023 BASS PRO AND CABELAS HAS THEM ON SALE FOR $999.99. the ps30 will plug right in.
they are facinating units. GOOD LUCK WITH YOUR NEW ADVENTURE.
another thing, if you have the otter boats, i reccomend using the ommish outfitters heavy duty snubbers. they take up a lot of the shock when the water picks-up.
I have a hardtop with the tubing type frame and mounted a pair of big jon pulleys to the front corners of the top and mounted the reels on the back section of the frame. they work great. you can stay in the boat when you deploy and retrieve them. i also have double fin otter boats, that pull hard and the top frame doesn't budge an inch. good luck!