Bob,
He did have a Florida office, I believe.
I am going to see those Brazil courses, hopefully next year.
I agree with the talk of the great sites, but it is always said in a somewhat demeaning way. I do not think Tom D. meant it that way considering his three best courses (in my opinion of course), Barnbougle, CK and PD are all on more visually attractive sites than any of Thompson's big five. Royal Melbourne is a better site than St. Georges and Cypress blows Cape Breton away from what I have seen. In Ran's comparison, I seem to remember Thompson coming second, which may be a little high. However, anybody who wants to stack up any architects top five against Thompson, I would be interested to read it. Mackenzie is the only clearly superior architect.
As for Thompson's lesser courses, Cataraqui is as charming as any course I have seen and has some unbelievable holes, mixed with a few duds, which Thompson did not work on. His work at St. Thomas is strong and his ideas for the second green (which were not implemented) were wild. Westmount could be in the same league as St. Georges, but too much of Thompson's work is hidden in maintenance and trees, what is there is great. Summit is another strong course, which owes its strength to a routing.
I do not see too many weaknesses in any of Thompson's work, with the exception of changes to the originals, which is hardly any fault of his.
As for his influence, he has certainly influenced all of the Canadian architects, Robinson and Cornish clearly and directly, but Carrick has gone through fazes of building "Thompson-like bunkers", McBroom is a member of St. Georges, I assume because he sees something he likes. Because they have not build Cape Breton or St. Georges, is as much about their own philosophies as anything, but I do not think it is because of any lack of influence. Even Mackenzie praised Jasper, which suggests to me that he may even have been influenced.