Loose Windshield

I have recently joined the site and I must say I am excited about the wealth of knowlege available from fellow V-20 owners. I mainly use my boat for fishing in the pamlico sound and offshore around 40 miles off the NC coast. Well needless to say the waters around here can knock the fillings loose in your mouth in addition to everything on the boat. Last year I managed to work the windshield loose at the base. I think I can get some blocking to hold under the windshield in the cabin, I'm just not sure how to access the base of the windshield from above so I can drive some new screws through. The windshield will pivot if I remove the bracing. Can I access it from there? Any and all sugestions will be greatly appreciated.
P.S. - I'm running a '86 hull with a 2001 200hp suzuki.