Fisher's decision came 10 days after he interviewed with Miami.
"It lasted a little longer than I would have liked," Ross said with a chuckle in a phone interview with the AP. "We did everything we thought we could do. We were stretching. We made an offer better. We worked hard at it."
"The organizational structure I don't believe was an issue at all," Ross said. "I've always thought the relationship between the coach and general manager is a partnership, and we felt Jeff was fine with that."
Fisher, who coached the Titans franchise for 17 years, was Miami's first choice this winter and widely considered the top prize on the NFL coaching market. Ross wanted to make a splash by hiring a coach who would reinvigorate the fan base, and Fisher offered the best chance to do that.
"Jeff was great - he had the experience that the other ones might not have," Ross said. "But it has always been my philosophy to hire young people who have a real desire to succeed, and that's what's out there. Hopefully there's a Hall of Fame coach we'll be talking to."
"We have continued to evaluate candidates even after we spoke with Jeff," Ross said. "We're excited about the candidates we're considering. They're outstanding in their own right. We'll continue with our plan, which will include interviewing several candidates more. I'm confident the process will result in the choice of the right coach to lead our team."
Ross said he didn't know why Fisher chose the Rams, but their situation might be considered more appealing than Miami's for several reasons. The Rams have former No. 1 overall pick Sam Bradford at quarterback and the No. 2 pick in this year's draft, while the Dolphins have endured a revolving door at quarterback for years, and they'll pick eighth or ninth in the first round of the draft.
But the state of the Dolphins makes it harder to attract top talent. The same franchise that successfully courted Jimmy Johnson, Nick Saban and Bill Parcells has now lost out to a St. Louis franchise dogged by years of losing and speculation about relocation.