While I'm not familiar with your particular boat, a couple of issues will arise from raising the boom as you propose.
First, the sail(s) will need to be modified due to the shorter hoist caused by moving the boom up the mast. This will of course cost you sail area (power) in the end. (and cost some $$ - not much though)
Second, this will overall raise the center of effort of your sailpan, possibly making the boat somewhat more tender.
You may also run out of length on your sheet as the total distance from boom to boat will increase as well.
Generally the designers knew what they were doing... overly high booms can look somewhat odd too.
Last edited by Faster; 04-13-2006 at 10:45 PM.