foreward sonar
 

what can i use to keep out of rocks /under stumps in canadian shield lakes thanks\\\\\

How fast are you travelling?

Some lakes (many lakes) are not mapped well - particularly up north in SK and MB. BUT the resorts can usually outline areas where you need to be careful. In terms of having some sort of sonar "looking ahead" these are typically deployed on your bow mount trolling motor or on a dedicated pole mount - and in both cases the speed is limited to a few kms/hr.

There isn't anything I'm aware of that will allow you bomb down a lake at 60km/hr and get an accurate (and reliable) picture far enough in front of you so you can react and avoid running into a shallow reef.

Best thing is to get some local knowledge and a map and slow down through (and self map) areas you have travelled. Live Maps are available now on every brand of unit. Once you have been over an area, you know that line is safe.

Good luck, be careful and enjoy yourself.

Active target or live scope on a separate pole from the troller, put it in forward mode, can see 70 feet ahead, but not very fast maybe 2-3 mph

forward sonar
 

2/3 mile top speed trolling most time and jigging
thanks guys

I use my Mega Live on an ArcLab pole mount at 2-3 mph without any issue. You can point it forward and see 70 ish feet out without issue.

SS