If you are talking about a single hole in the transom at the back of the boat, that is a drain hole - you fill it with a plug. If you are talking about a hole elsewhere, I'm not sure what you are referring to.
As for the pictures, you need to resize them to a web size - they should be 100k or so - if taken with a cell phone camera or digital camera, the file size may simply be too large. There are plenty of methods to reduce the picture size. If you have a modern PC, with a microsoft operating system, the photo gallery program has a built in 'resize' under the editing tab. If you don't just google 'resize photo' and you'll find a photo or app that works.