I have a Caldwell The Rock BR rest which has the spiked feet. The problem is that sometimes Im using it on the ground and the spikes dont work well in dirt. I noticed on Caldwells site they do have some small rubber adapter feet that the spikes can sit in but my concern is if I move it a bit they may simply slide off. Is anyone aware of any after market feet that work or if not do you know who in Canada might carry the Caldwell feet - I cant find them on anyones website in Canada.