Name: Pip Bickerstaffe
Suggestion: Many people these days seem to use shooting gloves with their longbows. With a little practice you should find that you get a much faster and cleaner loose with a decent finger tab.
You can see an increase in arrow speed of around 10 feet per second by using a tab, this as much as you might hope for from a 5 lb heavier bow. So rather than risk becoming overbowed why not get the best out of the bow you have, then when you do buy a heavier bow you will see the genuine benefit of what it has to offer.