You drive to Mathison Island N of Winnipeg on Lake Winnipeg....(near the "pinch").  You fly 30 minutes up the Bloodvien river....farther if you desire.  You paddle the Bloodvien back to the mouth.  Take the free ferry service back accross to Mathison Island.

The local air charter can place you 5 days, 7 days, 10 days, any number of days up river.  All the Smallies, Monster Pike and Walleyes you can shake a stick at.

If you've got 3 weeks...than drive to Red Lake, Ont....and paddle all the way to Lake Winnipeg.

Go to Google Earth and find Mathison Isle.  Straight accross the lake is the native village of Bloodvien.  You can follow the river all the way back to Woodland Caribou if you desire.