What brushpile looks like on sonar
i have a lowrance 4x color sonar, not dsi, no gps. i have been patrolling the local lake in search of brushpiles, sandbass and groups of baitfish but have not had much luck. i am not sure if my ff settings are correct. i put it in manual mode, crank up the sensitivity turn off fish id but still have trouble marking anything. The avg depth of the lake is around 20-30ft. so should i use single or dual frequency? aka shallow or deep setting. its seems to mark fish better in the deeper river channel that runs through the lake is this normal? the channnel is about 50ft deep compared to the 15ft or so the brushpiles are said to be located. please help me with any info youve got. pictures would be a great help