I have started a lot of salt licks in the last 30 years and have some the you can put a 4wheeler in. Make sure the you have a good clay base not sand. If you try and start a salt lick in sand it just washes out. Buy you 3-4 cattle mineral blocks and spread them around your property and by the end of the summer you will have a good salt lick at one of these spots with a hole in the ground. You won't have any doubt which one they hit the most and next year you can add one of the high price deer minerals mixes. You can bust these mineral block in half to cover more spots. Remember you won't have any doubt if the deer are using it, they will dig the ground up.