Well..
I managed to go out and use the cart that I made down at coleman beach..and had the fish finder hooked up as well..
Fishfinder:
I havent received the hobie thru hull kit yet, so I am using just a rubber stopper that I carved to suit my wires. I was getting a lot of surface clutter on the ff and what seemed like a ton of debris floating in the water and wasnt sure if it was actual debris or if the xducer is not installed properly..I was getting temp and depth readings that seemed accurate though. If someone has a good configuration for the elite4 hdi for use in the ocean let me know and I will try and configure it accordingly.. The old fishfinder I used to have was nothing like this new one. I did catch a few perch and tried to let them swim around under my yak and it seemed to kinda produce a bit of an arch..

Cart:
Its hard to get this thing under the kayak properly while holding a 90 pound kayak up off the ground. I was thinking at least maybe a longer handle of 4-5 feet to get it into position unless anyone knows a different method to get it done more easily..? I like to place it in the middle of the kayak at its balance point. Is this the wrong way to do it? I was struggling with it quite a bit. Maybe I could attach it to the yak with the back end up the yak still sitting in the truck bed?
Also with the rope I used to lash it down it popped off of the kayak once and i had to reattach it all over again.. I think I may need to use a tie down strap instead. Once i had it on there and as long as I was on hard ground and the wheels didn't hit anything throwing the alignment off (I hit a stupid rock and it twisted the cart), it worked *pretty good. Storing the cart on the kayak made the kayak feel somewhat sluggish in the water, especially going into the current. I will try to avoid storing it on my kayak in the future.
Any advice is appreciated

RG