I had a black cocker spaniel when I lived on Okinawa (ie: Japan's Hawaii). She would get really hot if I wasn't careful. I had a cooling vest for her and a kiddy pool in the backyard for her to step into / lay in / whatever when she got too hot. I also made sure she always had access to water and shade. I never put clothes on her because I felt the breeze couldn't get thru her fur as much if I did. We would hike but always early morning hours for her and nothing when the sun was overhead. In Japan, they had flag days to inform you of the heat index. Green Flag days were ok for anything; Yellow flag days were caution for new to the island people, elderly or children; but Red Flag days limited ALL outside activities.
Thanks for all of the suggestions. They are really appreciated. I'll be checking out the cooling items since he seems to get really hot if its much above 75. Since we do so much during the day in the summer, these items are probably worth trying. They may at least help. For canoeing, we'll try to rig some shade for him.
Ojo on May 23 at 10:00 AM