Thank for your comment James. As I’m on Bali, far from my ‘Surprise’ I can’t measure the length of the spinnakerboom. However, I noticed it reaches some little 20-30 cm past the furled genoa when the boom is hanging horizontal in the spinnaker ring at the mast.
When sailing with wind abeam the spinnaker boom will nearly touch the forestay/furled genoa, but it has stick beyond it. At least, that’s what I thought was necessary. That’s what I used to have on my previous 6.5m dinghy (a Randmeer).
I do have a shorter, sleeker, boom (stored at the starboard side) that I thought should be used to pole out the genoa. For that purpose I considered it to be quiet short.
I may try to both in reverse use.