How much ballast and where?

[playt]

Please excuse my ignorance, but I've just found my way on board and now am trying to find my way around the organisation and website.
I recently acquired a shallow-draught Top Hat of uncertain vintage, of insurance origins, and am now in the process of rebuilding her in the backyard to occupy myself in my dotage. She bounces around on the top of the water and rolls on a calm day like one of those dunking glass ducks. So I've never bothered to sail her.
My priority is to dig out the sheet steel punchings and cement/sand mix, replace it with lead, stiffen her up and try to get her to sit properly in the water.
Can anyone help me with the original plans/specifications for ballast (and mast/sail plan would be good too), bearing in mind that she does not have an inboard engine but a transom-mounted outboard?
Regards, Playt.

[storm petrel]

My understanding is that Formit made a few of these boats simply by putting a plug in the bottom of the mold and just adding extra ballast so they had the same righting moment as the standard Top Hats. I would expect the ballast to still be lead. Others may have more details.

[spotswood]

Hi Playt,
I don't know how to post on here the sail plan I have, or the profile drawing , which shows you the ballast distribution, but if I had your email address I could email them to you.
The ballast ( in a Mk 3 anyway) is 1234 kg. This is for the standard draft model.
Cheers, Spotswood

[playt]

Thanks fellers. Email is playton@bigpond.com