Sure you can Tim....but two things to note.
1) You can often turn the canoe around and use the bow seat, put a
little weight of course in the new bow...wilderness-tripping style.
or
2) Remove the middle thwart...but remember to put the seat-setup in
Behind the center mark. Don't know how much paddling you do...if
you're sit-&_switch or kneeling...you always want the "catch" to happen
near center, but the actual area of one's power pull wants to be behind
center a bit. You want to look at your canoe's design...and gauge
where it paddles the most efficiently from....to specifically mark
where your weight should be.

Have fun,
Steve