The strapless jump on a surfboard: why it is pro level, what must be in place first and how to prepare board, kite and landing realistically.
The honest answer first: in a strapless air you jump on a surfboard without straps; the board stays with your feet only through foot pressure and, in tricks, a grab. It is the wave riders' jump: more feel, less technical safety net. IKO lists "jump on a wave strapless" as the last item of the wave programme, after all other strapless manoeuvres [1]. That hints at the order: strapless start, jibe and wave riding first, then jumping.
I therefore classify the strapless air as pro, not intermediate. The reason is the combination of jumping (49% of injuries in the KITE study occurred during a jump or trick [2]) and missing bindings. Where the board is not secured it becomes a projectile. IKO explicitly warns for strapless in waves that the board can be pushed into you by the waves [1].
You need this much groundwork for a reason: in a large survey skill level was the most important risk factor, and beginners had a clearly higher injury risk than advanced riders [8]. This guide does not describe how to take off, but what you must be able to do beforehand. It does not replace a coach.
Do you ride strapless reliably, also in chop? Do you land jumps with straps under control? IKO advises going back a step when in doubt [5]. Milestone: ten landings with straps and ten lanes strapless without a fall (practical benchmarks).
Smaller kite, a board you know, calm conditions. The first strapless jump does not happen in the strongest wind [1]. Milestone: you explain why kite and board fit the day.
A measurement on big-air kiters showed: with successful kiteloops the landing load was clearly lower because the kite provides a kind of parachute effect; with failed loops it was missing and the load rose [6]. For your strapless air this means: the kite's position counts more than height. How to lead it, your coach shows you. Milestone: you explain where the kite should be at take-off and landing.
First attempts are small hops over chop or flat water, no tricks (practice). The goal is not height but a board that stays under your feet. Milestone: five small hops in a row, board stays at the foot.
Plan space to roll out. IKO recommends kicking the board off and bringing the kite overhead on a hard landing [3]. Milestone: you land cleanly and ride on.
At some point the board gets lost. Practise how you get it back (body drag) and what you do with the kite. Milestone: you retrieve the board without hurry.
A surfboard is heavy, hard and fast. Without bindings it can fly away in the air and come towards you on impact in the water. Remember that in-vivo measurements on landing showed peak loads of up to 3012 newtons, around three times body weight, albeit on twin tip riders [7]. A recent survey names knee ligament injuries as those with the longest time loss [8].
Data on strapless jumps are thin. I know of no study that examined them separately. So: build-up instead of shortcuts, a coach instead of YouTube. After a fall you keep tension in the lines and keep the board in sight, as IKO describes for falls in waves [1]. This guide does not replace supervised training.
Practise losing the board as often as landing: one hop, deliberately give up the board, body drag back. If you retrieve the board without stress you jump more relaxed. (practical experience)
A jump on a surfboard without foot straps. IKO lists "jump on a wave strapless" as the last item of the wave programme [1].
Concrete data are missing. What is certain: jumps are the moment with the most injuries [2], and a free board can become a risk [1].
For jumping IKO calls it taboo [3]. How you secure your board you clarify with your school.
When strapless riding, jibe, wave reading and the jump with straps are secure. A coach assesses your level.
With straps the binding holds you to the board; strapless only foot pressure holds it, in a trick a grab. So you lack the safety net when mistakes happen, and the board can come off. Measurements show loop bindings produce lower landing forces than fixed boot bindings [7].
Downloop Transition: Why the Kiteloop Entry Requires a Coach