I ran the blowsion liner for a while, sold the hood to Royalflush, then he sold the ski to IDOK, he still has it, it is a great mod if you are not going to be doing flatwater freestyle.......
I have run the Wammer 8 hole hood, great hood for flatwater....... Blowsion Joe Kenny Hood, did not work for me for flatwater, but it is one durable hood, when I sold it, there was not one crack in it. Went to a new 2 hole wammer hood. Great for Flat Water, but had some issues with the liner...... I have not tried the WCF so I cannot talk about it....... the original 24/7 SR71 is the shiznit, but I have never owned one, and do not know about the current version of it...... Now there is the WDK, personally, I think it is probably built well, price is very good but the handholds look like there was no thought into the location or shape of them..... The TKO is just about identical to the Wammer so you would not go wrong there. The XFT is totally different, but I have not used or seen one of those so no opinion. Forget the Brutus Hood (Blowsion). Not even sure they still make those.