This could probably be of interest for you, it redirects the help message from the minibuffer to a tooltip at point.

Probably not the best lisp style, I hacked it about ten years ago, but it never failed me.

It's basically monkey-patching cperl-describe-perl-symbol with an around-function to show the tooltip at the point of the cursor.

I think pos-tip.el needs to be installed first.

(require 'pos-tip)
(require 'cl)

(add-hook 'cperl-mode-hook
      (lambda ()
;;        (cperl-toggle-autohelp)
        (setq cperl-lazy-help-time 2)


        (defadvice cperl-describe-perl-symbol (around cperl-describe-p
+erl-symbol-tooltip activate)
          "redirect message to tooltip"
          (flet ((message (fmt &rest args)
                          (pos-tip-show (apply 'format fmt args))))
            ad-do-it))


        ))
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