In terms of content, perhaps consider putting something more relevant on the home page. I think you're giving too much emphasis on technical site issues that would be of no interest to people looking for information about your club. I'm not sure if the general news headlines belong here either - it looks like your padding out content for the sake of it. Weather and racing news are probably more appropriate, and should be grouped together.
Overall, it's neat and looks well, but there are too many boxes for my liking. On the home page especially, it's difficult to know if any one piece of information is more important than the next. I would suggest grouping the login, weather, news vertically along the right, putting the important info in the same column as the what's new section (probably above it), and leave the center column for good relevant introduction text.
Other than that, my only problem would be with the side navigation. Once you've selected a page, it's good practice to make that link inactive, and preferably distinguish it from the others in some way. I appreciate that your use of frames might complicate this, but it can be done.
Hope that helps!