The use of crow has advantages and disadvantages IMO. I know DW doesn't agree but I can say without a doubt that it tamed my UF considerably with regard to low speed wing drop. This is not in question in the case of my UF - it is a plane fact. Because of this I will NOT fly my UF without crow. However, I don't like what it does to the flare phase of landing. Without crow I could grease my UF on pretty much every time. Now with crow for some reason I just can't get that perfect flare. As DW says, it tends to want to drop out on me and I wind up making landings more solid that I'd like.