While I have a 16 FQ, not the bunkhouse model, I got this cover 2 months ago. Due to the bad reviews on most of the covers, I was expecting it to have holes in it by now, especially being in the cheapest price range, however it's done well so far. No holes, and I occasionally unzip the side and go inside checking on things. Staying dry inside and outside of the trailer, no condensation or moisture at all. It's been through some very high winds and heavy rain. I'll be satisfied if it holds up 2 more months, even if I have to replace it next winter, but it looks like it's going to be good for more than 1 year.
I measured the trailer from back corner to the front nose to be 18'. I bought the 20 - 22 ft. cover to be able to cover the rear mounted rack too, but I would have been fine with the 16 - 20' cover linked here. I have a lot of excess tucked in.
2019 Wolf Pup 16FQ - bought new 3/2020
2013 F150 5.0 STX SCab 4x4 SB/3.55 rear/tow pkg./36 gal. tank/1695 Payload/7350 GVWR