As Woodsman said - two lines total. 2 rods or 2 tip ups or one of each. Need to be within 60 meters with an unobstructed view of your line. As for limits, you're allowed two walleye but they have to be over 18.1" to keep. Be warned, keeper walleye are pretty rare even though fishing is generally good. It's not uncommon to catch 40- 50 unders before you luck in to a keeper. If you're keen to bring some fish home - target perch (50 limit) or pike (4 limit - check the size restrictions) or burbot (no limit).