Forespar HD 7-15
There are two things to consider - the size of the sail you are using, and how robust the pole is.
I just did this research to buy a pole for our Lazyjack 32 schooner with a 130 genoa.
For the sail, Forespar recommends a pole the same length as the foot of the headsail.
For robustness, Forespar has at their website (forespar.com) some general information on poles given boat length and whether you'll be using the pole in light, moderate and/or heavy air; and some boat specific info. For extendable poles they recommend a pole a little longer than the headsail foot, so there's some overlap in the tubes at full extension for strength.
For the Hunter 27 they recommend their HD 7-15 - that's a twist-lock, telescopic pole that's 7' closed, maximum 15' open.
There's quite a lot of good info at the Forespar site on pole selection, deployment and storage, including a pretty good video. I have no affiliation with Forespar; they're just the largest US manufacturer of whisker poles.
You'll also need to consider the type of ends you want on the pole, the mast attachment (ring or car on track) and how you will store it (in chocks on deck, in chocks on stantions, or on the mast).
I've had some luck purchasing used poles on craigslist. I bought an HD 7-15 last year for a friend's Catalina 22 after we lost part of his original pole overboard in a race; and just bought an older push-button 10-18 for the schooner. I'm looking at storage options now, and also at converting the pole to line control vs. the push buttons.
Mike Turner
Lazyjack 32 schooner "Mary'Lis"
Mobile Bay, Alabama
