In your config/settings.cfm file put something like this:
// Text/select/password/file Fields
set(functionName="textField,textFieldTag,select,selectTag,passwordField,passwordFieldTag,textArea,textAreaTag,fileFieldTag,fileField",
class="form-control",
labelClass="control-label",
labelPlacement="before",
prependToLabel="<div class='form-group'>",
prepend="<div class=''>",
append="</div></div>",
encode="attributes" );
You can add any code you need to and it will be used to augment your use of the form helpers.