i got a secondhand hull to replace one that is delaminating and holed. i'm curious about how much a h16 hull (with pylons) should weigh. anybody ever weigh hulls?
Most weight data is for the whole boat, weighed for racing, including mast, sails, rigging, etc. to a 320 LB minimum. I seem to remember individual hull weighs around 80 LB but I could be wrong.
Light hulls are about 83 lbs.
Most are around 85 - 88 lbs.
For a short period of time ('95 - '96 [?]), Hobie Cat was weighing individual hulls and marking the weight on the transom behind the rudder pin.
Actually - My hulls are marked at 69 and 70 respectively.
I don't know if that's before they add the pylons or not but 80+ seems high.
Rico
Hobie Cat Fleet 204
i love this site. u guys are awesome. thanks, i'm going out to weigh my new hull now, armed with parameters! : )
Those lite hulls don't seem to make you any faster Rico! 
What year is your boat? Mine's a '98 and it's not marked. Weighed 317 at '98 Rehoboth Continentals and 321 at '99 FWB Continentals. Just replaced the racing rudders w/EPO's off the 17 (which is sold, BTW) which will save about 4 lbs. Also using the superlight mainsheet system from the 17. I'll probably have to carry weight in Syracuse come fall. 
If a hull is extra heavy, it's likely that the styrofoam flotation blocks have become waterlogged. I've had it happen to me and heard from another guy who it happened to. The only cure is to install an inspection port and let the hull bake in the sun for weeks. The other guy I mentioned put in two inspection ports and dug out all the foam. I think he said that he took around 40 lbs from each hull.
You don't think of styrofoam as being able to hold water, but I've seen more than one covered styrofoam lid from a hot tub that weighed over 100 lbs.
Jack
Matt - It's not the hulls that slows me down - It's the Crew Weight. That's why I like a lot of wind. Anyway - My boat is a '98 - I can't beleive your hulls weigh in the 80+lbs for a Hobie 16. That's heavy.
And my hull do have marks with weight - don't know why yours don't - I do have a 98 with 97 graphics however.
Hmmmmmmmmmmmmmmmmmmmmm?
See you in Mexico.
Rico
I was wondering how they go about weighting your boats at these races?
Rico:
I just checked my boat - the hull weights are there!
Stbd - 70
Port - 69
I had never noticed them before.
/please disregard my first post re: weights in the 80's
nova:
The best system is a 4 point hoist attached to a load cell. You roll your boat (mast down, but laid across the tramp - all other parts either attached or on the tramp) under the hoist, the boat is lifted, and the load cell outputs to a digital display. This method is accurate to +/- 1 or 2 lbs. if the cell is calibrated first.
A less accurate way is to use 2 bathroom scales, one under each hull. This has to be done on a hard, level surface and it's better if the scales are on pieces of plywood. This method is accurate to +/- 4 or 5 lbs. if the scales are of decent quality and are calibrated first (use barbell weights - 160 lbs on each)
Matt - I knew it - Where were you getting 80+ lbs from anyway - you know better than that.
Nova - If you come to the 2004 North American Championships - we will be using the single point load cell as Matt described. That is the most accurate way - One point of contact seems to work the best.
Rico
Piece of trivia... Not sure how much difference it makes..
When weighing an aircraft, it is always done inside a building, out of the wind, so that lifting does not upset the accuracy. Can make a big difference.
Possibly the tramp could act as an airfoil, thereby affecting the weight. (either more or less depending on how the wind is flowing over it)