used some cheap trimable mud flaps from Amazon. They work pretty good, they have have mountains on them, haha. Can't see them once they get some dirt on them though.
Easy Fit Mud Guard 9" - Set of 2 https://www.amazon.com/dp/B0002NIJUS/ref=cm_sw_r_cp_api_n3grxbWRK5JAP
Thanks MtWilly for the tip and the link. Just ordered a pair!