A prototype is not just documentation. Don't use it if you don't mean it!

Having said that, here are two suggestions:

# honour the prototype:
print foo( one => qw( two three four ) ), "\n";
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Since you consider the prototype valuable as documentation, you will likely value the documentation of setting the first argument apart in the call as well.

# bypass the prototype:
print &foo( qw( one two three four ) ), "\n";
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While not recommended in this situation, it may be useful with arguments from other expressions, particularly function calls:

# bypass the prototype:
print &foo( bar(@args) ), "\n";
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But as you've been told, it is likely better to just give up this use of prototypes.