I've been using the Mako/Hully Roller combo for at least ten years. Never had any scoffing problems on my glass or composite boats. There are two modifications I have employed:
The rubber buckle covers on the tie down straps don't last very long. I replace them with tennis balls recovered from the Chicago River and Sewage Canal.
The Hully Rollers put a serious and worrisome dent in my glass boats when I tighten the straps. To prevent this, before cinching the HR end I place one of those foam hull protector thingies between the hull and the rollers. When cinched really tight the boat seems safe from damage.
Good product. I'd buy them again if I didn't already have three sets. Beats the heck out of loading a long yak by yourself on those J Frame things.
Mated the Mako saddles w. Hully Rollers. Loading & unloading is a breeze. My kayaks just softly plop into place and stay there. Real simple and just like that. BTW I'm 5'3" and 115 lbs, so it's not like I can muscle them on.
No marring of the kayaks' finish (one is Trylon, the other FG). There is a soft plastic strip down the center of mine, perhaps the older models lacked this. If not, it's certainly easy to pad them with minicell or other anti-scuff pads. I see that as extra insurance and not a necessity.
Using the buckled strap and the sharkchuck strap makes for a clean, very secure cross tie. The saddle notches facilitate this.
My Matrix has a sunroof so I can observe the Mako saddles just slightly in front of the glass window. They do not move, bounce, vibrate or otherwise cause concern. I've had them on I-96 going 60-70 mph with a pretty good breeze coming out of the west.
The Makos are like a pair of soft flexible hands gently cupping the hull of my kayak. In good hands with Yakima? Hmmm, maybe so, but that slogan's already taken.
What an utter disappointment. The saddles themselves maybe warrant a 6 rating, but my experience with the saddles as well as Yakima and the retailer has led to the 2 rating.
I researched all over about kayak carriers and was firmly convinced that Yakima Mako saddles would be the best (from customer reviews). I took the $200 plunge and bought the saddles from Marathon Sports in Toronto. At the time the sales lady was very helpful and convincing...obviously selling me on these saddles. Very excited I tried them out with my 17.5 ft boat. I was horrified after getting the boat secured and driving down my street that the boat was moving a good inch or so from the car/wind. I immediately called Yakima and Marathon, and basically was told that I'm stuck with these saddles. Both tried to pin this on my "improper" set up/use of the saddles, and would not allow me to exchange them for something else or return them. (I found it an absolute crock that I set them up incorrectly as I work at a canoe/kayak store and strap boats down on a regular basis.)
So the long and the short of things go with the Thule Hullaport instead - my boat didn't move a hair (even on the highway) and pass over Marathon. Their unhelpfulness and no return policy bites the big one.
ABOUT RON'S PROBLEM WITH ROLLING ROLLERS -- Initially, I found that my Hully Rollers shifted/rolled down when I removed the kayak. It took time, but I fixed this problem with better usage and wear/tear. First, the butterfly clips, attached to the rollers, were not tight enough. Second, the roof clamp screw, which locks onto the rubberized bar, was not tight enough. Third, the rubberized bar itself was very slick (almost had an oily finish) when first purchased. With six trips under my belt and driving through some heavy downpours, the oily finish on the bar is gone and the rubber exterior on the bar is more scuffed up. It seems to hold better. Right now, I don't see this as a problem.
But if it persists for Ron, I would scuff up the bar a little where the various brackets attach to it, or add a little double-sided tape. Then, it should work fine.