BORK Kayak (in additional to lessons and rentals (see below on this page), they offer clubs for youth and an old paddlers who wish to paddle regularly)
BORK Kayak (aka BORK You) Surfski - Camps, Lessons, Club (youth 8-18 sprint kayak, older 16+ surfski) for frequent local paddlers. Two Locations (Oeiras Harbour just west of Lisbon, Sesimbra)
Duoro Academy / Paddling Center Douro River Porto (“won't necessarily make reservations online, but we walked in during the work week and reserved a couple of their plastic Nelo 510s for later in the week” Denise Weeks October 2022 video) Outrigger canoes also