well i not embarrest to say i used to run mine doubled up before that bloody ban ,reason being we never saw alot of them about and why when we got the chance to run one turn to my mate or have him turn to me and say it my slip keep your dog on the lead [although we might not get another chance for a couple weeks ] so instead we said chance is here lets take it yes if the other dog was injured or we were out mooching through the day on our owns the dogs did take them on there own but majority of the time doubled ,no doubt i,ll get slated but the truths the truth