You are correct, the quick hitch thing is an issue with these and I am in the process of wanting a better arrangement than I have. Modification can be done but is a PITA. Here is a previous thread that discusses this very issue.
http://www.greentractortalk.com/for...ence-with-Frontier-SS1023B&highlight=spreader
http://www.greentractortalk.com/for...ence-with-Frontier-SS1023B&highlight=spreader