Shrink wrap is a waste of money, in the end you tear it up and throw it away. It is not cheap, and unless you have it done extremely well, it will hold moisture in and will form mildew. You really have to remove all electronics for sure, and all side curtains, but that should be done regardless, shrink wrap heats a lot during the day and gets very cold at night, your boat will experience extreme temp changes throughout the lay up. Ideally, have a custom cover made, they will last 10+ years and will end up being cheaper then 10 years of shrink wrap, plus you will have it designed how you perfer. Shrink wrap does not let gel coat breathe well, often a cause of a chaulky hull over time, especially for those who do not remove wax before winter lay up. We used to do it, and honestly it was no better then a blue tarp, except the blue tarps often ripped in high winds and shrink wrap did not, but neither was cleaner, blue traps were cheaper, but do rub the hull from the slack. Personally the best option is a custom cover, save up if its not in your budget now, but for those who really care about their boats, it really is a must. It will also keep the boat looking much nicer. Were actually having a custom cover made for our boat as soon as she is hauled out at the end of the month. The canvas guy took measurements and cut the rough pieces this week, the way we designed it in 6 years it will pay for itself vs shrink wrap, and can be put on the boat by 1 person in under 10 min, and can be removed and put back on as needed. We can clean all spring and take it off for the day then put it back on to actually keep things clean, I usually take about 3 weekends to get the boat ready for the year so this is ideal for me. Some love shrink wrap, but if you talk to thosw who know boat yards they know there ar ebetter options and wiser ways to spend your hard earned money. Also, any cover is better then no cover, no cover is a mistake, not only does this make the boat dirty, melting snow becomes ice, expands and puts pressure on the deck and cockpit that was not intended by the designers to handle, and if it happens enough you will get spider cracks in the deck and these can become serious since every time you wash down some water will seep into your deck, something nobody wants to deal with down the road. So in the end do what you have to to get the boat covered even if this year it is not the ideal method, but try and plan for the future to obtain whats best to keep your boat in great shape. I'll have pictures of my custom cover up sometime in Nov after its done.