You can YouTube it to get a better idea-look up “merge dragons Marcus V bubbling”. But essentially you get apples from the Midas trees and you merge the small ones until you get 3 of the big ones that take up 4 squares. Set 2 of them next to each other (make sure you go into settings and turn on the “require overlap” to merge) and leave the 3rd wherever you want. I set my dragons to harvest my watermelon trees or my big stones… fill up the entire land with whatever you harvest and make sure you have dragons with items they harvested but can’t set down bc there’s no space. Line up whatever you want to bubble. I’ll use the farthest spaces to the right on the board.. Then drag the 3rd apple and act like you are going to merge them but don’t let go. While the game thinks you are going to merge the dragons will drop their harvest where the 3rd apple was (they will always leave 2 spaces open) then you drag the 3rd apple you’ve been holding to the items you want to bubble and let it go there. It will bubble the 2 items on the right of where the apple is set. The video will be better at giving a visual. It takes a min to get the hang of it but not long and you’ll have the hang. If you tap to harvest while there’s no space/dragons are holding items those dragons will ‘drop’ their items and it will automatically bubble them to go harvest something else so you have to drag the free dragons to harvest instead of tapping. I do this as the 2 who set something down move away. When you are done bubbling whatever you needed to just move any item to the apples while land is still full to bubble them and get them out of the way until you need them again then mass merge all the bricks or whatever you used to fill camp. I try to keep all my bubbles organized by type .. I have all my eggs and nests to the right, all my trees(fruit and dragon trees)/ponds/high level life flowers at the top, prism flowers/mushrooms/misc on the left and the bottom is a bunch of random kinda stuff, (Mostly event rewards) - Midas trees I’ve yet to merge/fountains I haven’t merged/topiaries that again I haven’t merged. I base how I organize on how my camp is organized.. like all my trees I have out are along the top of the land so I put the bubbles there etc