@ghutch I found the thread where @adamhcaldwell talks about his RTP "recipe"
https://www.ballofspray.com/forum#/discussion/comment/337309
"Obviously I am biased toward the kicker now...so if you have something figured out your happy with, thats great. But here is a little about what I have learned and what I do.
Firstly, Not all rear kickers are created equal. If you take the time to make one there is NOTHING BETTER. It think if you look closely at some top PROs who have been advocating double boots for a long time, you'll see a trend happening back toward the rear kicker.
Quick back story. I tried 3 or 4 different kickers back in 2008 after having old double approach bindings in 2000-2005, followed by a extreme version of a cutdown rear shell (very soft plastic) from 2006-2011. This rear shell exploded one day out at Andys testing skis and Cord and I ended up pulling Mapples kicker off his ski and using that for an afternoon. We both had NO issue making the switch with Andys Kicker - there was just a few sets of getting 'used to it', but in general 'it worked'. When I got back to Charleston the next week, I took two or three 'brand name'' rear toes out to try them as they were stock, and could not run a pass. My heel was falling off the side of the ski and it was very sloppy & slippery.
This was a huge surprise and unexpected as a kicker seems so simple, how could it be that different between Mapple and the brand name? - Well, Mapple built his kicker for performance, reliability, consistency, longevity, functionality. While as the brand names are made to look good, look comfortable, easy to get your foot in and have a good appearance on the showroom floor. Grip tape on a metal plate is not as attractive in the pro-shop as a nice thick cushy foam pad.
Cord still uses the Mapple pattern for his kicker, while I have found off the shelf parts from Wileys that work phenomenally well for me, I just got tired of cutting parts myself. Wilely's products are highly underrated. They evolve from a designs from hundreds of pro-skiers over the decades - back then I think there was a broader knowledge of the finer aspects of skis setup at the upper level manufacturers across the board. At some-point there was a shift. Change driven by good intentions, but not necessarily a good understanding.
Certainly a hard-shell creates more leverage over the ski. Question is, is more leverage over the ski actually better? IMHO, the answer is No. While leverage seem relay integral behind the boat, it can be a major detriment to the skis ability to articulate under our body throughout the entire turn phase, starting from CL.
If anyone is interested here is the "Caldwell kicker recipe":
Wilely Plate with all the foam removed.
Apply a tread/grip tape in replacement of the foam pad.
Remove the rubber loop and mount it back further on the plate such that your foot can penetrate the loop to get your entire foot to be supported to prevent excessive twist. Your toes should not be hanging over the edge of the plate. You should be able to move your heel some, but not twist it off the side of the kicker plate.
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Personally, I love the Wiley because they are setup with various size rubber loops, and wide/narrow plates, along with off the shelf parts that are low cost and easy to to repair, and affordable to keep on hand.
For some, one big fear with the kicker is the foot 'slipping out'. If that is happening or close to happening, then the kicker is wrong. Even if you break at the waist, your back foot shouldn't feel like its going to slip out.
Its common when going to a kicker that the ski will be much better at rolling/turning and keeping the speed up. It can also allow your hips to move much further forward, as well as reduce the leverage acting on the back leg/foot/ankle. This helps the nose of the ski stay down much better everywhere allowing the front foot to do its job in managing roll angle, while the back foot is just along for the ride. Sometimes this requires a shift to the fin/boots to correct the way the ski rides in the water.
If/when going to a kicker, plan on taking a couple sets to re-calibrate with the ski setup. Dont judge too quickly if using an off the shelf kicker. Take the time to get it setup right. For under $100, you can get a wiley kicker shipped out. Low price to pay for a lot of potential gain.
Often with more free ankle movement, and a closer foot spread being achievable, the front boot will need to be moved back on the ski. As the feet get closer together, your hips are naturally taller, and pelvis will consistently shift further forward." -Adam Caldwell