I Purchased the Elite 7 last summer as well with the 83/200 transducer and love it! Too see my downrigger balls while trolling I have to have the transducer tilted back otherwise the balls will blow back out of range of the ducer. Marking fish is just a matter of basically playing with the settings and the most important for me is to have the Frequency range set at 83 khz and the Auto Sensitivity to OFF . The noise rejection is set on high and surface clarity is set to low although I do adjust these at times to eliminate the noise(black dots) on the screen at times . From there while out fishing manually adjust the sensitivity up and you will be able to see those lakers on the bottom and all other fish in the water column with no problems while seeing your riggers balls! You just have to balance the sensitivity setting with the amount of noise you will pick up on the screen if you take it up too high. Hope this helps and good luck!