You guys are more ambitious than I am. If I don't think I can DIY something and have it come out looking professional or factory, I don't do it.
I'm pretty handy with a needle myself, but when my rear window started breaking loose from the top, I got a new top on eBay for a little under $300, then paid a convertible top repair shop to install it. $500 for the install, which was the lowest bid by far. I haven't looked back. Well, sometimes in the rearview mirror, but you know what I mean. haha