Morning you legends.

I'm chasing some advice. Firstly I'm running a 588 and a P66. Went trawling with my boys, back of the 3 mile last Saturday with only one hookup and got busted off after a few substantial runs. 
 

I'll try and put up some pics, I was thinking bait with maybe some bigger fish around. I'm running the P66 under the 600w setting, and have picked up the sounder settings off here. Looking for any advice really, I think it works quite well. 
 

Secondary I have a TM260 still sitting in its box as I haven't tackled the install, going to be fitted to my Genesis 565XL cuddy, after any installation advice to get a good reading at around 20-25 knots. At the moment the P66 struggles after 16ish. 

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