I have a pair of Rab gaiters and they are very good. In my case, because I wear a rain skirt and a long waterproof jacket I am always thinking of a better way to improve my lot when it's raining. If I could I'd like to do away with my gaiters AND my rain skirt and still keep my legs dry, but how?
Last week I watched the film 'Fame' (I think its a very good movie) and some of the young women dancers were wearing those long leg warmers so beloved at that time, they fitted from ankle to knees. Do you remember them? I wonder if some people still wear them today?
I'm going to talk to my wife's friend who is an excellent seamstress, she modified my walking jacket, made my rain skirt and fitted a 4' zip to my Hunker and for me, these items work really well. I now have this idea for her to design and make me two long tubes of waterproof material (I have enough Silnylon) which will be elasticated at both ends which I can just pull quickly over my boots and up my legs when it starts to rain. The bottom end needs to be designed to grip the top of my boots so my feet stay dry and the other end I want to secure 2-3" above my knees. Just like in 'Fame' but in my case, to be waterproof. I've found by experience that if I am going to get wet (not in light rain but when its really heavy rain and windy at the same time) it's my knee areas that are most likely to be affected.
I use this same basic idea to keep my hands dry, I have a pair of much shorter 'sleeves,' again made with Silnylon, one end of each is elasticated and secures around my wrist, my jacket sleeves go over them but the other end is not elasticated, they remain open and to work effectively the material has to be about 1" longer than my fingers. These work really well, with or without gloves, they roll-up very small, I always keep them in my jacket pocket and they are very lightweight