My honest opinion is that if you are going to LOTW on the Minnesota side, that you hire a launch. However, if you have a big rig, good gps mapping system, and have good weather, you can hit the big lake by yourself.
What the big launch boats do now (which now is TUNA time on LOTW for the BIG walleyes!!!!!!!), is that they buzz out to Garden Is and work the reefs with a crawler harness or crank. They work just off the reefs, targeting the suspended, roaming eyes.
This is the best time of the year to go, for it is not uncommon to see 12 – 13 pound fish come to the boat.
However, the launch boats are a bit spendy.
To be honest, Mille Lacs has an AWESOME bit right now. You can also go to Upper Red lake and look for crappies……..