I went up the Maligne and into Poohbah on June 1 of 2014.  This was some of the highest water in recent years. It was a tough paddle upstream but doable.  We mainly stuck close to the river right and were able to avoid most swifts. Use care around the falls area.  This was my first time to Poobah. The trip up took longer than anticipated.  Figure on 10 to 12 hours paddling upstream if the water is high.  Once you get to Poobah creek the paddling is easier.  We were using a 17 royalex mad river revelation canoe.  I would have preferred a lighter boat. There are at least 3 relatively short portages on Poobah creek that are wet and soggy - but more of an irritant than difficult.  Poohbah Lake is great for fishing. We did outstanding on SM bass, (several trophies) walleye, and pike.  Biggest pike was around 35 inches but we did see larger pike.  Our only disappointment was no lake trout. We tried hard a few times for them but could not get hits or locate them.  A fish locator is handy on this lake. Poohbah is a big lake.  We camped on the second main point of the second bay in on the right. This was a nice campsite. You almost need to pick what parts of the lake you want to fish and camp in that area because it is too big to move around easily all day long. Wind was a problem on 2 days. We fished, but were limited in where we could safely go.  Bottom line. You will work hard to move up the river but it is doable and generally safe. It will also likely be slower in the spring do to higher water and keep that in mind in your planning.  I think the fishing quality was definitely worth it.  Best,  Sergeant Rock.