Tower developer will try to sell corporate sponsorships. (Pinnacle Group Holdings Inc.)

Pinnacle Group Holdings Inc., disclosing its financing plans for a proposed 600-foot tower attraction on Tampa's waterfront, said it will try to sell corporate sponsorships to build the $45-million project.

At the same time, Pyramid said it is now working with the Port of Tampa, which owns the site on which the tower would be built, to come up with a master plan to develop 11 acres surrounding its project on the east side of Channelside Drive north of the Florida Aquarium.

The first phase of that development would be the Pinnacle of Tampa Bay tower, an attraction that would feature an upscale restaurant, a nightclub, ice rink, jazz museum, broadcast facility, and interactive educational and cultural exhibits.

Financing the tower, according to Pinnacle, would require selling between one to three corporate sponsorships. In return for their up-front investment in the project, each corporate sponsor …