How to properly rotate float sideways

[racoon]

Hi,

I have some wide figures and tables that don't fit on a portrait page.
I tried to use the "Rotate sideways" option in LyX but it is hard to 
read the PDF online since the text on the sideways page is sideways.

So, instead I am using

\usepackage{afterpage}

\afterpage{
        \clearpage
        \begin{landscape}
                # put float here #
        \end{landscape}
}

(I have created a module for it.)

I was just wondering whether that seems to be the best way to do it or 
maybe there is a way to get the "Rotate sideways" to rotate the page in 
a readable way in the PDF output or so.

Daniel