Bass pedal solution
Hi i have a few solutions to add on to troubleshoot the problem that you currently have with the beater rebounding onto your shin. please also refer to my thread on the pedal adjustment and also add these pointers that i am about to give regarding the rebound of the beater.
1)
Angle of the beater with respect the the skin- what you have to do is to loosen the spring of the beater first. this is respect to older models of pedals which do not have independent beater angle adjustment. once you loosen the spring, adjust the beater angle such that the beater is closer to the skin of your kick drum. moreover, even though this should solve the problem, you do not want it too close to the skin due to the fact that it is going to give you problems with the amount of power in your stroke. therefore, with trial and error, try to get enough distance with your pedal angle to ensure your sound is not compromised and at the same time, your shin does not get hit.
2)
Seating distance form the kick drum- Another factor that causes this problem would be the distance that you sit from the kick drum. if you sit too close, the angle of your shin is going to be bent towards the kick drum which obviously means your shins are going to get hit by the beater. If you are sitting too far, you are not going to get proper control of your pedal. One rule of thumb that i give my students would be to ensure that the angle measured from your calf to your thighs should be about 110 degrees.
3)
Foot position on the pedal-I have seen many drummers have their foot all the way up the foot board. Not only does this give your shin a higher chance of getting hit by the beater, your foot also has to travel a longer distance towards the floor to get a stroke and this is going to require a greater amount of effort. when i am playing, my foot is only half way up the board and not only does this give me more control with lesser effort on the stokes, my shin does not get hit and at the same time, i have enough room for my foot to slide up the board when i am doing a fast double stroke on the kick drum.
4)
Pedal technique-This would be very subjective to different drummers. for myself, i mostly play heel-up unless i am feathering the kick for swing playing or for lighter sound. when i play the kick heel up, the beater is always held against the skin after every stroke and due to this i do not have to worry about the beater hitting my shin.
So far this information plus the ones on the other thread should solve your problem. if other problems arise, feel free to ask for solutions. myself and other softy drummers I'm sure would be more than happy to help