The best replacement for hydrofoil is trim tabs.

The best alternatives to hydrofoil are rated as following:
★★★★★  trim tabs
★★★  hydroplane
★★  catamaran
★★  hovercraft
★★  airfoil
★  permatrim
★  no hydrofoil
★  smart tabs
  stingray
  trim tab
  tabs

Your alternative for hydrofoil is not listed? Suggest!
Speaking about hydrofoil, one probably shouldn't forget about trim tabs.

Other search terms related to hydrofoil and their ratings are:
★★★★★ trim tabs
★★ trolling plate
You have in mind a companion for hydrofoil and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of hydrofoil in all years. Click on graph for more.
hydrofoil
trim tabs
hydroplane