Golf cart tire? I'm not sure what your power plant is, but the 6 over arm is probably a bit shy. You can mask some of that with bar design. IMO, your bar is to short, I would make it closer to 7' and a 4 bar system. If a bar is rigid it will do just as your describing. It's gotta be able to flex a little and absorb some of the impact. Also your tire is too far off the ground especially with it being that short, a pop can height is a good place to start, maybe lower if you keep that super short bar. Also be sure that your Marvin arent pushing up when you are staged, they will just increase how fast its gonna come up. And lastly, run little air in your tire so it also can absorb some of the hit.Again this is all just my opinion and as most will tell you, I don't know shit