Yes, alone is possible. But it also depends on your body weight. If you are rather light (around 60 kg), it is easy to paddle from the rearmost seat, if you are somewhat heavier (over 80 kg), you should sit in the middle.

Of course, it is not intended to function as a "one-seater". Accordingly, it is then no longer as manoeuvrable and agile. But, yes, you can.

I have already paddled around on a lake alone with this canoe. That worked quite well.