I would also take a look at other opportunities to develop the relationship outside of the situation. Is trust and training effective at other times? If walking through a stressful area is the only issue, introducing those areas over a period of time with trust and leadership can be effective. Other non-stressful area can provide a good exercise time. The key is understanding the queues we give and that of our fury friends and enforcing a trusting bond. My first step is to identify the breed and mix, then read breed literature to reinforce my understanding, then develop the relationship progressively over time. Happy trails.