Hi younggun.....I hope this wearing goes well for you when you do go for it.... yes the Fullcap will have more bonding simply because --if you think about it -- it`s perimeter is bigger/longer than a topper..it`s coming down further at the back and along the sides and back up from the side-burn area to the temples---a partial is [generally ]an oval shape so the perimeter will have a certain `length`if you measured around it which is shorter than Fullcap......the Fullcap will have a longer overall perimeter in comparison.....also it`s recommended to apply tape / glue in a line front to back along the crown to hold it in the middle...you`d certainly need that for surfing etc.
Fullcaps are generally twice the price of toppers....... when you go on your world tour..call to Ireland and we`ll have a drink! Been a while since I was in Spain... probably won`t get there for another while yet!! Regards for now.. Paul.